2120138226 has 40 divisors (see below), whose sum is σ = 4760382000. Its totient is φ = 705269592.

The previous prime is 2120138219. The next prime is 2120138233. The reversal of 2120138226 is 6228310212.

It is an interprime number because it is at equal distance from previous prime (2120138219) and next prime (2120138233).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2120138226.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 67725 + ... + 93951.

It is an arithmetic number, because the mean of its divisors is an integer number (119009550).

Almost surely, 2^2120138226 is an apocalyptic number.

2120138226 is an abundant number, since it is smaller than the sum of its proper divisors (2640243774).

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

2120138226 is a wasteful number, since it uses less digits than its factorization.

2120138226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26740 (or 26731 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2120138226 is about 46044.9587468596. The cubic root of 2120138226 is about 1284.6595768377.

Adding to 2120138226 its reverse (6228310212), we get a palindrome (8348448438).

The spelling of 2120138226 in words is "two billion, one hundred twenty million, one hundred thirty-eight thousand, two hundred twenty-six".