20112231221332 has 24 divisors (see below), whose sum is σ = 35386166523456. Its totient is φ = 10001919717888.

The previous prime is 20112231221323. The next prime is 20112231221371. The reversal of 20112231221332 is 23312213221102.

It is a junction number, because it is equal to n+sod(n) for n = 20112231221297 and 20112231221306.

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, 974433 + ... + 6416695.

It is an arithmetic number, because the mean of its divisors is an integer number (1474423605144).

Almost surely, 2^{20112231221332} is an apocalyptic number.

It is an amenable number.

20112231221332 is a deficient number, since it is larger than the sum of its proper divisors (15273935302124).

20112231221332 is a wasteful number, since it uses less digits than its factorization.

20112231221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5447247 (or 5447245 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20112231221332 its reverse (23312213221102), we get a palindrome (43424444442434).

The spelling of 20112231221332 in words is "twenty trillion, one hundred twelve billion, two hundred thirty-one million, two hundred twenty-one thousand, three hundred thirty-two".