23011012221020 has 48 divisors (see below), whose sum is σ = 48393329402208. Its totient is φ = 9191041816320.

The previous prime is 23011012221013. The next prime is 23011012221107. The reversal of 23011012221020 is 2012221011032.

It is a self number, because there is not a number n which added to its sum of digits gives 23011012221020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40530710 + ... + 41094530.

It is an arithmetic number, because the mean of its divisors is an integer number (1008194362546).

Almost surely, 2^{23011012221020} is an apocalyptic number.

23011012221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23011012221020 is an abundant number, since it is smaller than the sum of its proper divisors (25382317181188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23011012221020 is a wasteful number, since it uses less digits than its factorization.

23011012221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566790 (or 566788 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 23011012221020 its reverse (2012221011032), we get a palindrome (25023233232052).

The spelling of 23011012221020 in words is "twenty-three trillion, eleven billion, twelve million, two hundred twenty-one thousand, twenty".