21110311101300 has 72 divisors (see below), whose sum is σ = 63734782754496. Its totient is φ = 5384659061760.

The previous prime is 21110311101283. The next prime is 21110311101343. The reversal of 21110311101300 is 310111301112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21110311101300.

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, 1529725789 + ... + 1529739588.

Almost surely, 2^{21110311101300} is an apocalyptic number.

21110311101300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21110311101300 is an abundant number, since it is smaller than the sum of its proper divisors (42624471653196).

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

21110311101300 is a wasteful number, since it uses less digits than its factorization.

21110311101300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059465417 (or 3059465410 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 21110311101300 its reverse (310111301112), we get a palindrome (21420422402412).

The spelling of 21110311101300 in words is "twenty-one trillion, one hundred ten billion, three hundred eleven million, one hundred one thousand, three hundred".