2101002222021 has 16 divisors (see below), whose sum is σ = 2807675136000. Its totient is φ = 1397501831088.

The previous prime is 2101002221993. The next prime is 2101002222073. The reversal of 2101002222021 is 1202222001012.

It is not a de Polignac number, because 2101002222021 - 2²³ = 2100993833413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101002272021) 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, 2328600 + ... + 3102318.

It is an arithmetic number, because the mean of its divisors is an integer number (175479696000).

Almost surely, 2^{2101002222021} is an apocalyptic number.

It is an amenable number.

2101002222021 is a deficient number, since it is larger than the sum of its proper divisors (706672913979).

2101002222021 is a wasteful number, since it uses less digits than its factorization.

2101002222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775768.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2101002222021 its reverse (1202222001012), we get a palindrome (3303224223033).

The spelling of 2101002222021 in words is "two trillion, one hundred one billion, two million, two hundred twenty-two thousand, twenty-one".