2157020022 has 16 divisors (see below), whose sum is σ = 4315452912. Its totient is φ = 718771200.

The previous prime is 2157020009. The next prime is 2157020039. The reversal of 2157020022 is 2200207512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38479 + ... + 76122.

It is an arithmetic number, because the mean of its divisors is an integer number (269715807).

Almost surely, 2^2157020022 is an apocalyptic number.

2157020022 is an abundant number, since it is smaller than the sum of its proper divisors (2158432890).

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

2157020022 is a wasteful number, since it uses less digits than its factorization.

2157020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117743.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2157020022 is about 46443.7296305971. The cubic root of 2157020022 is about 1292.0660804352.

Adding to 2157020022 its reverse (2200207512), we get a palindrome (4357227534).

The spelling of 2157020022 in words is "two billion, one hundred fifty-seven million, twenty thousand, twenty-two".