22121011211 has 16 divisors (see below), whose sum is σ = 24515301888. Its totient is φ = 19832311200.

The previous prime is 22121011183. The next prime is 22121011229. The reversal of 22121011211 is 11211012122.

It is not a de Polignac number, because 22121011211 - 2²² = 22116816907 is a prime.

It is a super-4 number, since 4×22121011211⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121011811) 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, 58145 + ... + 218226.

It is an arithmetic number, because the mean of its divisors is an integer number (1532206368).

Almost surely, 2^22121011211 is an apocalyptic number.

22121011211 is a deficient number, since it is larger than the sum of its proper divisors (2394290677).

22121011211 is a wasteful number, since it uses less digits than its factorization.

22121011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276562.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22121011211 its reverse (11211012122), we get a palindrome (33332023333).

The spelling of 22121011211 in words is "twenty-two billion, one hundred twenty-one million, eleven thousand, two hundred eleven".