21224022042212 has 48 divisors (see below), whose sum is σ = 42906503001600. Its totient is φ = 9078849676800.

The previous prime is 21224022042211. The next prime is 21224022042217.

21224022042212 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21224022042212² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21224022042211) 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, 5730914 + ... + 8677062.

It is an arithmetic number, because the mean of its divisors is an integer number (893885479200).

Almost surely, 2^{21224022042212} is an apocalyptic number.

21224022042212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21224022042212 is an abundant number, since it is smaller than the sum of its proper divisors (21682480959388).

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

21224022042212 is a wasteful number, since it uses less digits than its factorization.

21224022042212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955812 (or 2955810 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

It can be divided in two parts, 2122402 and 2042212, that added together give a palindrome (4164614).

The spelling of 21224022042212 in words is "twenty-one trillion, two hundred twenty-four billion, twenty-two million, forty-two thousand, two hundred twelve".