122320131012 has 36 divisors (see below), whose sum is σ = 309215309676. Its totient is φ = 40771108800.

The previous prime is 122320130971. The next prime is 122320131023. The reversal of 122320131012 is 210131023221.

122320131012 is a `hidden beast` number, since 1 + 22 + 320 + 1 + 310 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 63084359556 + 59235771456 = 251166^2 + 243384^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 639762 + ... + 808662.

Almost surely, 2^122320131012 is an apocalyptic number.

122320131012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122320131012 is an abundant number, since it is smaller than the sum of its proper divisors (186895178664).

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

122320131012 is a wasteful number, since it uses less digits than its factorization.

122320131012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189028 (or 189023 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 122320131012 its reverse (210131023221), we get a palindrome (332451154233).

The spelling of 122320131012 in words is "one hundred twenty-two billion, three hundred twenty million, one hundred thirty-one thousand, twelve".