912111211022101 has 4 divisors (see below), whose sum is σ = 927063853825804. Its totient is φ = 897158568218400.

The previous prime is 912111211022093. The next prime is 912111211022119. The reversal of 912111211022101 is 101220112111219.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 255638367803025 + 656472843219076 = 15988695^2 + 25621726^2 .

It is a cyclic number.

It is not a de Polignac number, because 912111211022101 - 2³ = 912111211022093 is a prime.

It is a super-2 number, since 2×912111211022101² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (912111211022161) 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, 7476321401760 + ... + 7476321401881.

It is an arithmetic number, because the mean of its divisors is an integer number (231765963456451).

Almost surely, 2^{912111211022101} is an apocalyptic number.

It is an amenable number.

912111211022101 is a deficient number, since it is larger than the sum of its proper divisors (14952642803703).

912111211022101 is a wasteful number, since it uses less digits than its factorization.

912111211022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14952642803702.

The product of its (nonzero) digits is 144, while the sum is 25.

The spelling of 912111211022101 in words is "nine hundred twelve trillion, one hundred eleven billion, two hundred eleven million, twenty-two thousand, one hundred one".