3857121222 has 16 divisors (see below), whose sum is σ = 7756864752. Its totient is φ = 1278603360.

The previous prime is 3857121193. The next prime is 3857121253. The reversal of 3857121222 is 2221217583.

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, 1774753 + ... + 1776924.

It is an arithmetic number, because the mean of its divisors is an integer number (484804047).

Almost surely, 2^3857121222 is an apocalyptic number.

3857121222 is an abundant number, since it is smaller than the sum of its proper divisors (3899743530).

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

3857121222 is a wasteful number, since it uses less digits than its factorization.

3857121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551863.

The product of its digits is 13440, while the sum is 33.

The square root of 3857121222 is about 62105.7261611198. The cubic root of 3857121222 is about 1568.2709435112.

The spelling of 3857121222 in words is "three billion, eight hundred fifty-seven million, one hundred twenty-one thousand, two hundred twenty-two".