20123132220312 has 64 divisors (see below), whose sum is σ = 55165628741760. Its totient is φ = 6066323404800.

The previous prime is 20123132220283. The next prime is 20123132220329. The reversal of 20123132220312 is 21302223132102.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 15 ways as a sum of consecutive naturals, for example, 197420514 + ... + 197522417.

It is an arithmetic number, because the mean of its divisors is an integer number (861962949090).

Almost surely, 2^{20123132220312} is an apocalyptic number.

20123132220312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20123132220312 is an abundant number, since it is smaller than the sum of its proper divisors (35042496521448).

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

20123132220312 is a wasteful number, since it uses less digits than its factorization.

20123132220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394943144 (or 394943140 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20123132220312 its reverse (21302223132102), we get a palindrome (41425355352414).

The spelling of 20123132220312 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty-two million, two hundred twenty thousand, three hundred twelve".