20312211022 has 16 divisors (see below), whose sum is σ = 32458325760. Its totient is φ = 9505649592.

The previous prime is 20312211019. The next prime is 20312211037. The reversal of 20312211022 is 22011221302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20312210987 and 20312211005.

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, 3216918 + ... + 3223225.

It is an arithmetic number, because the mean of its divisors is an integer number (2028645360).

Almost surely, 2^20312211022 is an apocalyptic number.

20312211022 is a deficient number, since it is larger than the sum of its proper divisors (12146114738).

20312211022 is a wasteful number, since it uses less digits than its factorization.

20312211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6440247.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20312211022 its reverse (22011221302), we get a palindrome (42323432324).

The spelling of 20312211022 in words is "twenty billion, three hundred twelve million, two hundred eleven thousand, twenty-two".