21244211244212 has 96 divisors (see below), whose sum is σ = 43310036689920. Its totient is φ = 9020692961280.

The previous prime is 21244211244173. The next prime is 21244211244229.

21244211244212 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21244211244212² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 418555028 + ... + 418605780.

It is an arithmetic number, because the mean of its divisors is an integer number (451146215520).

Almost surely, 2^{21244211244212} is an apocalyptic number.

21244211244212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21244211244212 is an abundant number, since it is smaller than the sum of its proper divisors (22065825445708).

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

21244211244212 is a wasteful number, since it uses less digits than its factorization.

21244211244212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60453 (or 60451 counting only the distinct ones).

The product of its digits is 16384, while the sum is 32.

It can be divided in two parts, 2124421 and 1244212, that added together give a palindrome (3368633).

The spelling of 21244211244212 in words is "twenty-one trillion, two hundred forty-four billion, two hundred eleven million, two hundred forty-four thousand, two hundred twelve".