1012101122221 has 4 divisors (see below), whose sum is σ = 1156686996832. Its totient is φ = 867515247612.

The previous prime is 1012101122209. The next prime is 1012101122317. The reversal of 1012101122221 is 1222211012101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1012101122221 - 2⁷ = 1012101122093 is a prime.

It is a super-3 number, since 3×1012101122221³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012101122195 and 1012101122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012101122521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72292937295 + ... + 72292937308.

It is an arithmetic number, because the mean of its divisors is an integer number (289171749208).

Almost surely, 2^{1012101122221} is an apocalyptic number.

It is an amenable number.

1012101122221 is a deficient number, since it is larger than the sum of its proper divisors (144585874611).

1012101122221 is an equidigital number, since it uses as much as digits as its factorization.

1012101122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144585874610.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1012101122221 its reverse (1222211012101), we get a palindrome (2234312134322).

It can be divided in two parts, 1012101 and 122221, that multiplied together give a palindrome (123699996321).

The spelling of 1012101122221 in words is "one trillion, twelve billion, one hundred one million, one hundred twenty-two thousand, two hundred twenty-one".