21220422402212 has 24 divisors (see below), whose sum is σ = 40618606596960. Its totient is φ = 9620196284160.

The previous prime is 21220422402203. The next prime is 21220422402251.

21220422402212 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636239693 + ... + 636273044.

It is an arithmetic number, because the mean of its divisors is an integer number (1692441941540).

Almost surely, 2^{21220422402212} is an apocalyptic number.

21220422402212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21220422402212 is a deficient number, since it is larger than the sum of its proper divisors (19398184194748).

21220422402212 is a wasteful number, since it uses less digits than its factorization.

21220422402212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272513131 (or 1272513129 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, 2122042 and 2402212, that added together give a palindrome (4524254).

The spelling of 21220422402212 in words is "twenty-one trillion, two hundred twenty billion, four hundred twenty-two million, four hundred two thousand, two hundred twelve".