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1012102112121 = 39724709140759
BaseRepresentation
bin11101011101001011111…
…11001010001101111001
310120202102010200102022220
432232211333022031321
5113040241120041441
62052541524434253
7133056556002522
oct16564577121571
93522363612286
101012102112121
11360259290951
1214419ab48989
1374596633329
1436db3845849
151b4d8e57466
hexeba5fca379

1012102112121 has 16 divisors (see below), whose sum is σ = 1363446403200. Its totient is φ = 667746943488.

The previous prime is 1012102112093. The next prime is 1012102112149. The reversal of 1012102112121 is 1212112012101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1012102112093) and next prime (1012102112149).

It is not a de Polignac number, because 1012102112121 - 25 = 1012102112089 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012102112121.

It is not an unprimeable number, because it can be changed into a prime (1012102112191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7119940 + ... + 7260698.

It is an arithmetic number, because the mean of its divisors is an integer number (85215400200).

Almost surely, 21012102112121 is an apocalyptic number.

It is an amenable number.

1012102112121 is a deficient number, since it is larger than the sum of its proper divisors (351344291079).

1012102112121 is a wasteful number, since it uses less digits than its factorization.

1012102112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165568.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1012102112121 its reverse (1212112012101), we get a palindrome (2224214124222).

The spelling of 1012102112121 in words is "one trillion, twelve billion, one hundred two million, one hundred twelve thousand, one hundred twenty-one".

Divisors: 1 3 97 291 24709 74127 140759 422277 2396773 7190319 13653623 40960869 3478014131 10434042393 337367370707 1012102112121