2021113122 has 128 divisors (see below), whose sum is σ = 4895686656. Its totient is φ = 544320000.

The previous prime is 2021113111. The next prime is 2021113147. The reversal of 2021113122 is 2213111202.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7457847 + ... + 7458117.

It is an arithmetic number, because the mean of its divisors is an integer number (38247552).

Almost surely, 2^2021113122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021113122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2447843328).

2021113122 is an abundant number, since it is smaller than the sum of its proper divisors (2874573534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021113122 is a wasteful number, since it uses less digits than its factorization.

2021113122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2021113122 is about 44956.7917227197. The cubic root of 2021113122 is about 1264.3390177971.

Adding to 2021113122 its reverse (2213111202), we get a palindrome (4234224324).

It can be divided in two parts, 20211 and 13122, that added together give a palindrome (33333).

The spelling of 2021113122 in words is "two billion, twenty-one million, one hundred thirteen thousand, one hundred twenty-two".