22220212112121 has 32 divisors (see below), whose sum is σ = 31574280936960. Its totient is φ = 13851200802816.

The previous prime is 22220212112107. The next prime is 22220212112149. The reversal of 22220212112121 is 12121121202222.

It is not a de Polignac number, because 22220212112121 - 2⁵ = 22220212112089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22220212112321) 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, 53737200 + ... + 54149118.

It is an arithmetic number, because the mean of its divisors is an integer number (986696279280).

Almost surely, 2^{22220212112121} is an apocalyptic number.

It is an amenable number.

22220212112121 is a deficient number, since it is larger than the sum of its proper divisors (9354068824839).

22220212112121 is a wasteful number, since it uses less digits than its factorization.

22220212112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418833.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22220212112121 its reverse (12121121202222), we get a palindrome (34341333314343).

The spelling of 22220212112121 in words is "twenty-two trillion, two hundred twenty billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-one".