111212022012009 has 32 divisors (see below), whose sum is σ = 149167642968960. Its totient is φ = 73700106854400.

The previous prime is 111212022012001. The next prime is 111212022012059. The reversal of 111212022012009 is 900210220212111.

It is not a de Polignac number, because 111212022012009 - 2³ = 111212022012001 is a prime.

It is a super-2 number, since 2×111212022012009² (a number of 29 digits) contains 22 as substring.

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 111212022012009.

It is not an unprimeable number, because it can be changed into a prime (111212022012001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 921950502 + ... + 922071120.

It is an arithmetic number, because the mean of its divisors is an integer number (4661488842780).

Almost surely, 2^{111212022012009} is an apocalyptic number.

It is an amenable number.

111212022012009 is a deficient number, since it is larger than the sum of its proper divisors (37955620956951).

111212022012009 is a wasteful number, since it uses less digits than its factorization.

111212022012009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123161.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 111212022012009 in words is "one hundred eleven trillion, two hundred twelve billion, twenty-two million, twelve thousand, nine".