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20011102121121 = 313998174765171
BaseRepresentation
bin1001000110011001100101…
…01000100010110010100001
32121212001011010001200201220
410203030302220202302201
510110330214120333441
6110320550131045253
74133516523342636
oct443146250426241
977761133050656
1020011102121121
11641572a505a51
1222b2351740829
13b22067415487
144d278491218d
1524a804898466
hex123332a22ca1

20011102121121 has 8 divisors (see below), whose sum is σ = 26681494154784. Its totient is φ = 13340722417440.

The previous prime is 20011102121117. The next prime is 20011102121137. The reversal of 20011102121121 is 12112120111002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20011102121121 - 22 = 20011102121117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20011102121121.

It is not an unprimeable number, because it can be changed into a prime (20011102123121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1816866 + ... + 6582036.

It is an arithmetic number, because the mean of its divisors is an integer number (3335186769348).

Almost surely, 220011102121121 is an apocalyptic number.

It is an amenable number.

20011102121121 is a deficient number, since it is larger than the sum of its proper divisors (6670392033663).

20011102121121 is a wasteful number, since it uses less digits than its factorization.

20011102121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6164991.

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

Adding to 20011102121121 its reverse (12112120111002), we get a palindrome (32123222232123).

The spelling of 20011102121121 in words is "twenty trillion, eleven billion, one hundred two million, one hundred twenty-one thousand, one hundred twenty-one".

Divisors: 1 3 1399817 4199451 4765171 14295513 6670367373707 20011102121121