906122111022121 has 4 divisors (see below), whose sum is σ = 1035568126882432. Its totient is φ = 776676095161812.

The previous prime is 906122111022067. The next prime is 906122111022223. The reversal of 906122111022121 is 121220111221609.

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 906122111022121 - 2⁷ = 906122111021993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (906122111032121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64723007930145 + ... + 64723007930158.

It is an arithmetic number, because the mean of its divisors is an integer number (258892031720608).

Almost surely, 2^{906122111022121} is an apocalyptic number.

It is an amenable number.

906122111022121 is a deficient number, since it is larger than the sum of its proper divisors (129446015860311).

906122111022121 is a wasteful number, since it uses less digits than its factorization.

906122111022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129446015860310.

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 906122111022121 in words is "nine hundred six trillion, one hundred twenty-two billion, one hundred eleven million, twenty-two thousand, one hundred twenty-one".