2021000101121 has 4 divisors (see below), whose sum is σ = 2036913487872. Its totient is φ = 2005086714372.

The previous prime is 2021000101067. The next prime is 2021000101157. The reversal of 2021000101121 is 1211010001202.

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 2021000101121 - 2³⁴ = 2003820231937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021000131121) 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, 7956693185 + ... + 7956693438.

It is an arithmetic number, because the mean of its divisors is an integer number (509228371968).

Almost surely, 2^{2021000101121} is an apocalyptic number.

It is an amenable number.

2021000101121 is a deficient number, since it is larger than the sum of its proper divisors (15913386751).

2021000101121 is a wasteful number, since it uses less digits than its factorization.

2021000101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15913386750.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2021000101121 its reverse (1211010001202), we get a palindrome (3232010102323).

The spelling of 2021000101121 in words is "two trillion, twenty-one billion, one hundred one thousand, one hundred twenty-one".