123000201220 has 24 divisors (see below), whose sum is σ = 278169686424. Its totient is φ = 45415458816.

The previous prime is 123000201209. The next prime is 123000201241. The reversal of 123000201220 is 22102000321.

It can be written as a sum of positive squares in 4 ways, for example, as 63011844 + 122937189376 = 7938^2 + 350624^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 123000201220.

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, 236538589 + ... + 236539108.

It is an arithmetic number, because the mean of its divisors is an integer number (11590403601).

Almost surely, 2^123000201220 is an apocalyptic number.

123000201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123000201220 is an abundant number, since it is smaller than the sum of its proper divisors (155169485204).

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

123000201220 is a wasteful number, since it uses less digits than its factorization.

123000201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473077719 (or 473077717 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 123000201220 its reverse (22102000321), we get a palindrome (145102201541).

The spelling of 123000201220 in words is "one hundred twenty-three billion, two hundred one thousand, two hundred twenty".