2106074525021 has 4 divisors (see below), whose sum is σ = 2106085201500. Its totient is φ = 2106063848544.

The previous prime is 2106074525011. The next prime is 2106074525029. The reversal of 2106074525021 is 1205254706012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1104495902500 + 1001578622521 = 1050950^2 + 1000789^2 .

It is a cyclic number.

It is not a de Polignac number, because 2106074525021 - 2²² = 2106070330717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106074525029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5036666 + ... + 5438763.

It is an arithmetic number, because the mean of its divisors is an integer number (526521300375).

Almost surely, 2^{2106074525021} is an apocalyptic number.

It is an amenable number.

2106074525021 is a deficient number, since it is larger than the sum of its proper divisors (10676479).

2106074525021 is a wasteful number, since it uses less digits than its factorization.

2106074525021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10676478.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 2106074525021 in words is "two trillion, one hundred six billion, seventy-four million, five hundred twenty-five thousand, twenty-one".