22101221011012 has 96 divisors (see below), whose sum is σ = 46082984258304. Its totient is φ = 9141811929600.

The previous prime is 22101221010991. The next prime is 22101221011027. The reversal of 22101221011012 is 21011012210122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 703912098 + ... + 703943494.

It is an arithmetic number, because the mean of its divisors is an integer number (480031086024).

Almost surely, 2^{22101221011012} is an apocalyptic number.

22101221011012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22101221011012 is an abundant number, since it is smaller than the sum of its proper divisors (23981763247292).

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

22101221011012 is a wasteful number, since it uses less digits than its factorization.

22101221011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48829 (or 48827 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22101221011012 its reverse (21011012210122), we get a palindrome (43112233221134).

It can be divided in two parts, 221012210110 and 12, that added together give a palindrome (221012210122).

The spelling of 22101221011012 in words is "twenty-two trillion, one hundred one billion, two hundred twenty-one million, eleven thousand, twelve".