2021210133101 has 4 divisors (see below), whose sum is σ = 2022573054432. Its totient is φ = 2019847211772.

The previous prime is 2021210133037. The next prime is 2021210133109. The reversal of 2021210133101 is 1013310121202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021210133101 - 2⁶ = 2021210133037 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 2021210133101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021210133109) 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, 681458441 + ... + 681461406.

It is an arithmetic number, because the mean of its divisors is an integer number (505643263608).

Almost surely, 2^{2021210133101} is an apocalyptic number.

It is an amenable number.

2021210133101 is a deficient number, since it is larger than the sum of its proper divisors (1362921331).

2021210133101 is a wasteful number, since it uses less digits than its factorization.

2021210133101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362921330.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2021210133101 its reverse (1013310121202), we get a palindrome (3034520254303).

The spelling of 2021210133101 in words is "two trillion, twenty-one billion, two hundred ten million, one hundred thirty-three thousand, one hundred one".