22001221110 has 64 divisors (see below), whose sum is σ = 59461392384. Its totient is φ = 5161574400.

The previous prime is 22001221103. The next prime is 22001221129. The reversal of 22001221110 is 1112210022.

It is a super-2 number, since 2×22001221110² (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 31 ways as a sum of consecutive naturals, for example, 1065099 + ... + 1085558.

It is an arithmetic number, because the mean of its divisors is an integer number (929084256).

Almost surely, 2^22001221110 is an apocalyptic number.

22001221110 is an abundant number, since it is smaller than the sum of its proper divisors (37460171274).

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

22001221110 is a wasteful number, since it uses less digits than its factorization.

22001221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150709.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22001221110 its reverse (1112210022), we get a palindrome (23113431132).

The spelling of 22001221110 in words is "twenty-two billion, one million, two hundred twenty-one thousand, one hundred ten".