21223211232212 has 24 divisors (see below), whose sum is σ = 42278650045632. Its totient is φ = 9227483144000.

The previous prime is 21223211232199. The next prime is 21223211232229.

21223211232212 is nontrivially palindromic in base 10.

It is a congruent number.

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, 10485775289 + ... + 10485777312.

It is an arithmetic number, because the mean of its divisors is an integer number (1761610418568).

Almost surely, 2^{21223211232212} is an apocalyptic number.

21223211232212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21223211232212 is a deficient number, since it is larger than the sum of its proper divisors (21055438813420).

21223211232212 is a wasteful number, since it uses less digits than its factorization.

21223211232212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20971552639 (or 20971552637 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

It can be divided in two parts, 2122321 and 1232212, that added together give a palindrome (3354533).

The spelling of 21223211232212 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred eleven million, two hundred thirty-two thousand, two hundred twelve".