2021113101 has 16 divisors (see below), whose sum is σ = 3080504448. Its totient is φ = 1154654400.

The previous prime is 2021113099. The next prime is 2021113111. The reversal of 2021113101 is 1013111202.

It is not a de Polignac number, because 2021113101 - 2¹ = 2021113099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021113111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114871 + ... + 131291.

It is an arithmetic number, because the mean of its divisors is an integer number (192531528).

Almost surely, 2^2021113101 is an apocalyptic number.

2021113101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2021113101 is a deficient number, since it is larger than the sum of its proper divisors (1059391347).

2021113101 is a wasteful number, since it uses less digits than its factorization.

2021113101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22292.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 2021113101 is about 44956.7914891621. The cubic root of 2021113101 is about 1264.3390134181.

Adding to 2021113101 its reverse (1013111202), we get a palindrome (3034224303).

The spelling of 2021113101 in words is "two billion, twenty-one million, one hundred thirteen thousand, one hundred one".