22012121110 has 32 divisors (see below), whose sum is σ = 47665347840. Its totient is φ = 7149801312.

The previous prime is 22012121081. The next prime is 22012121147. The reversal of 22012121110 is 1112121022.

It is a super-2 number, since 2×22012121110² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8273904 + ... + 8276563.

It is an arithmetic number, because the mean of its divisors is an integer number (1489542120).

Almost surely, 2^22012121110 is an apocalyptic number.

22012121110 is an abundant number, since it is smaller than the sum of its proper divisors (25653226730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22012121110 is a wasteful number, since it uses less digits than its factorization.

22012121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16550500.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22012121110 its reverse (1112121022), we get a palindrome (23124242132).

The spelling of 22012121110 in words is "twenty-two billion, twelve million, one hundred twenty-one thousand, one hundred ten".