1211100116310 has 48 divisors (see below), whose sum is σ = 3598697490336. Its totient is φ = 276822883584.

The previous prime is 1211100116309. The next prime is 1211100116327. The reversal of 1211100116310 is 136110011121.

1211100116310 is a `hidden beast` number, since 1 + 2 + 11 + 10 + 0 + 11 + 631 + 0 = 666.

It is a super-2 number, since 2×1211100116310² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 961189939 + ... + 961191198.

It is an arithmetic number, because the mean of its divisors is an integer number (74972864382).

Almost surely, 2^{1211100116310} is an apocalyptic number.

1211100116310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211100116310 is an abundant number, since it is smaller than the sum of its proper divisors (2387597374026).

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

1211100116310 is a wasteful number, since it uses less digits than its factorization.

1211100116310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922381157 (or 1922381154 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 1211100116310 its reverse (136110011121), we get a palindrome (1347210127431).

The spelling of 1211100116310 in words is "one trillion, two hundred eleven billion, one hundred million, one hundred sixteen thousand, three hundred ten".