123202200020 has 24 divisors (see below), whose sum is σ = 259026551784. Its totient is φ = 49223369216.

The previous prime is 123202200007. The next prime is 123202200101. The reversal of 123202200020 is 20002202321.

It can be written as a sum of positive squares in 4 ways, for example, as 15588021904 + 107614178116 = 124852^2 + 328046^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123202199968 and 123202200004.

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, 3576857 + ... + 3611136.

It is an arithmetic number, because the mean of its divisors is an integer number (10792772991).

Almost surely, 2^123202200020 is an apocalyptic number.

123202200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123202200020 is an abundant number, since it is smaller than the sum of its proper divisors (135824351764).

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

123202200020 is a wasteful number, since it uses less digits than its factorization.

123202200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7188859 (or 7188857 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 123202200020 its reverse (20002202321), we get a palindrome (143204402341).

The spelling of 123202200020 in words is "one hundred twenty-three billion, two hundred two million, two hundred thousand, twenty".