1201312312100 has 36 divisors (see below), whose sum is σ = 2606896939584. Its totient is φ = 480515851680.

The previous prime is 1201312312063. The next prime is 1201312312117. The reversal of 1201312312100 is 12132131021.

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, 8355017 + ... + 8497583.

Almost surely, 2^{1201312312100} is an apocalyptic number.

1201312312100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201312312100 is an abundant number, since it is smaller than the sum of its proper divisors (1405584627484).

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

1201312312100 is a wasteful number, since it uses less digits than its factorization.

1201312312100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226844 (or 226837 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1201312312100 its reverse (12132131021), we get a palindrome (1213444443121).

The spelling of 1201312312100 in words is "one trillion, two hundred one billion, three hundred twelve million, three hundred twelve thousand, one hundred".