2021201012106 has 12 divisors (see below), whose sum is σ = 4379268859602. Its totient is φ = 673733670696.

The previous prime is 2021201012099. The next prime is 2021201012147. The reversal of 2021201012106 is 6012101021202.

It can be written as a sum of positive squares in only one way, i.e., 1998714510081 + 22486502025 = 1413759^2 + 149955^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 112288945117 = 2021201012106 / (2 + 0 + 2 + 1 + 2 + 0 + 1 + 0 + 1 + 2 + 1 + 0 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56144472541 + ... + 56144472576.

Almost surely, 2^{2021201012106} is an apocalyptic number.

2021201012106 is an abundant number, since it is smaller than the sum of its proper divisors (2358067847496).

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

2021201012106 is a wasteful number, since it uses less digits than its factorization.

2021201012106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112288945125 (or 112288945122 counting only the distinct ones).

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

Adding to 2021201012106 its reverse (6012101021202), we get a palindrome (8033302033308).

The spelling of 2021201012106 in words is "two trillion, twenty-one billion, two hundred one million, twelve thousand, one hundred six".