2021113110021 has 8 divisors (see below), whose sum is σ = 2694830456064. Its totient is φ = 1347402252000.

The previous prime is 2021113109957. The next prime is 2021113110077. The reversal of 2021113110021 is 1200113111202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2021113110021 - 2⁶ = 2021113109957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021113110221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841480 + ... + 2179521.

It is an arithmetic number, because the mean of its divisors is an integer number (336853807008).

Almost surely, 2^{2021113110021} is an apocalyptic number.

It is an amenable number.

2021113110021 is a deficient number, since it is larger than the sum of its proper divisors (673717346043).

2021113110021 is a wasteful number, since it uses less digits than its factorization.

2021113110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244011.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 2021113110021 its reverse (1200113111202), we get a palindrome (3221226221223).

The spelling of 2021113110021 in words is "two trillion, twenty-one billion, one hundred thirteen million, one hundred ten thousand, twenty-one".