20331131222 has 16 divisors (see below), whose sum is σ = 32104574640. Its totient is φ = 9629699328.

The previous prime is 20331131179. The next prime is 20331131243. The reversal of 20331131222 is 22213113302.

It is a junction number, because it is equal to n+sod(n) for n = 20331131194 and 20331131203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785918 + ... + 811374.

It is an arithmetic number, because the mean of its divisors is an integer number (2006535915).

Almost surely, 2^20331131222 is an apocalyptic number.

20331131222 is a deficient number, since it is larger than the sum of its proper divisors (11773443418).

20331131222 is a wasteful number, since it uses less digits than its factorization.

20331131222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46495.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20331131222 its reverse (22213113302), we get a palindrome (42544244524).

The spelling of 20331131222 in words is "twenty billion, three hundred thirty-one million, one hundred thirty-one thousand, two hundred twenty-two".