123011201121200 has 60 divisors (see below), whose sum is σ = 337753612229040. Its totient is φ = 42175268954880.

The previous prime is 123011201121121. The next prime is 123011201121229. The reversal of 123011201121200 is 2121102110321.

It is a happy number.

It is a super-2 number, since 2×123011201121200² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21966283115 + ... + 21966288714.

It is an arithmetic number, because the mean of its divisors is an integer number (5629226870484).

Almost surely, 2^{123011201121200} is an apocalyptic number.

123011201121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123011201121200 is an abundant number, since it is smaller than the sum of its proper divisors (214742411107840).

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

123011201121200 is a wasteful number, since it uses less digits than its factorization.

123011201121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43932571854 (or 43932571843 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 123011201121200 its reverse (2121102110321), we get a palindrome (125132303231521).

The spelling of 123011201121200 in words is "one hundred twenty-three trillion, eleven billion, two hundred one million, one hundred twenty-one thousand, two hundred".