22000012112121 has 16 divisors (see below), whose sum is σ = 29349533945088. Its totient is φ = 14658584096000.

The previous prime is 22000012112107. The next prime is 22000012112173. The reversal of 22000012112121 is 12121121000022.

It is a cyclic number.

It is not a de Polignac number, because 22000012112121 - 2¹⁷ = 22000011981049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22000012112121.

It is not an unprimeable number, because it can be changed into a prime (22000012112621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56802295 + ... + 57188291.

It is an arithmetic number, because the mean of its divisors is an integer number (1834345871568).

Almost surely, 2^{22000012112121} is an apocalyptic number.

It is an amenable number.

22000012112121 is a deficient number, since it is larger than the sum of its proper divisors (7349521832967).

22000012112121 is a wasteful number, since it uses less digits than its factorization.

22000012112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396432.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22000012112121 its reverse (12121121000022), we get a palindrome (34121133112143).

The spelling of 22000012112121 in words is "twenty-two trillion, twelve million, one hundred twelve thousand, one hundred twenty-one".