1200100123232 has 48 divisors (see below), whose sum is σ = 2542690507392. Its totient is φ = 555494737920.

The previous prime is 1200100123219. The next prime is 1200100123237. The reversal of 1200100123232 is 2323210010021.

It is a super-2 number, since 2×1200100123232² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1200100123232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200100123237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18049328 + ... + 18115695.

It is an arithmetic number, because the mean of its divisors is an integer number (52972718904).

Almost surely, 2^{1200100123232} is an apocalyptic number.

It is an amenable number.

1200100123232 is an abundant number, since it is smaller than the sum of its proper divisors (1342590384160).

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

1200100123232 is a wasteful number, since it uses less digits than its factorization.

1200100123232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36165111 (or 36165103 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1200100123232 its reverse (2323210010021), we get a palindrome (3523310133253).

The spelling of 1200100123232 in words is "one trillion, two hundred billion, one hundred million, one hundred twenty-three thousand, two hundred thirty-two".