22121421331432 has 8 divisors (see below), whose sum is σ = 41477664996450. Its totient is φ = 11060710665712.

The previous prime is 22121421331349. The next prime is 22121421331447. The reversal of 22121421331432 is 23413312412122.

It can be written as a sum of positive squares in only one way, i.e., 16011794172676 + 6109627158756 = 4001474^2 + 2471766^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 22121421331394 and 22121421331403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1382588833207 + ... + 1382588833222.

Almost surely, 2^{22121421331432} is an apocalyptic number.

It is an amenable number.

22121421331432 is a deficient number, since it is larger than the sum of its proper divisors (19356243665018).

22121421331432 is a wasteful number, since it uses less digits than its factorization.

22121421331432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765177666435 (or 2765177666431 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

Adding to 22121421331432 its reverse (23413312412122), we get a palindrome (45534733743554).

The spelling of 22121421331432 in words is "twenty-two trillion, one hundred twenty-one billion, four hundred twenty-one million, three hundred thirty-one thousand, four hundred thirty-two".