1211300320100 has 72 divisors (see below), whose sum is σ = 2878694085120. Its totient is φ = 439668823680.

The previous prime is 1211300320049. The next prime is 1211300320123. The reversal of 1211300320100 is 10230031121.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7819652 + ... + 7973051.

Almost surely, 2^{1211300320100} is an apocalyptic number.

1211300320100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211300320100 is an abundant number, since it is smaller than the sum of its proper divisors (1667393765020).

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

1211300320100 is a wasteful number, since it uses less digits than its factorization.

1211300320100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15792789 (or 15792782 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1211300320100 its reverse (10230031121), we get a palindrome (1221530351221).

The spelling of 1211300320100 in words is "one trillion, two hundred eleven billion, three hundred million, three hundred twenty thousand, one hundred".