21220244202212 has 24 divisors (see below), whose sum is σ = 40511550274272. Its totient is φ = 9645523884800.

The previous prime is 21220244202191. The next prime is 21220244202251.

21220244202212 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, 10764887 + ... + 12582657.

It is an arithmetic number, because the mean of its divisors is an integer number (1687981261428).

Almost surely, 2^{21220244202212} is an apocalyptic number.

21220244202212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21220244202212 is a deficient number, since it is larger than the sum of its proper divisors (19291306072060).

21220244202212 is a wasteful number, since it uses less digits than its factorization.

21220244202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083099 (or 2083097 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, 2122024 and 4202212, that added together give a palindrome (6324236).

The spelling of 21220244202212 in words is "twenty-one trillion, two hundred twenty billion, two hundred forty-four million, two hundred two thousand, two hundred twelve".