1311100222212 has 36 divisors (see below), whose sum is σ = 3615458189616. Its totient is φ = 397303097520.

The previous prime is 1311100222141. The next prime is 1311100222253. The reversal of 1311100222212 is 2122220011131.

1311100222212 is a `hidden beast` number, since 131 + 1 + 100 + 222 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

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, 1655429178 + ... + 1655429969.

It is an arithmetic number, because the mean of its divisors is an integer number (100429394156).

Almost surely, 2^{1311100222212} is an apocalyptic number.

1311100222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1311100222212 is an abundant number, since it is smaller than the sum of its proper divisors (2304357967404).

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

1311100222212 is a wasteful number, since it uses less digits than its factorization.

1311100222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310859168 (or 3310859163 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1311100222212 its reverse (2122220011131), we get a palindrome (3433320233343).

The spelling of 1311100222212 in words is "one trillion, three hundred eleven billion, one hundred million, two hundred twenty-two thousand, two hundred twelve".