2120105136511 has 16 divisors (see below), whose sum is σ = 2239674024960. Its totient is φ = 2001344012640.

The previous prime is 2120105136493. The next prime is 2120105136551. The reversal of 2120105136511 is 1156315010212.

It is a cyclic number.

It is not a de Polignac number, because 2120105136511 - 2²³ = 2120096747903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120105136511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120105136551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8106390 + ... + 8363836.

It is an arithmetic number, because the mean of its divisors is an integer number (139979626560).

Almost surely, 2^{2120105136511} is an apocalyptic number.

2120105136511 is a deficient number, since it is larger than the sum of its proper divisors (119568888449).

2120105136511 is a wasteful number, since it uses less digits than its factorization.

2120105136511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259014.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 2120105136511 in words is "two trillion, one hundred twenty billion, one hundred five million, one hundred thirty-six thousand, five hundred eleven".