1211102131100 has 36 divisors (see below), whose sum is σ = 2628747390024. Its totient is φ = 484319974080.

The previous prime is 1211102131091. The next prime is 1211102131159. The reversal of 1211102131100 is 11312011121.

It is a congruent number.

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, 1107674 + ... + 1910273.

It is an arithmetic number, because the mean of its divisors is an integer number (73020760834).

Almost surely, 2^{1211102131100} is an apocalyptic number.

1211102131100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211102131100 is an abundant number, since it is smaller than the sum of its proper divisors (1417645258924).

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

1211102131100 is a wasteful number, since it uses less digits than its factorization.

1211102131100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021974 (or 3021967 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1211102131100 its reverse (11312011121), we get a palindrome (1222414142221).

The spelling of 1211102131100 in words is "one trillion, two hundred eleven billion, one hundred two million, one hundred thirty-one thousand, one hundred".