2158659221202 has 80 divisors (see below), whose sum is σ = 5283696413952. Its totient is φ = 653274629280.

The previous prime is 2158659221189. The next prime is 2158659221203. The reversal of 2158659221202 is 2021229568512.

2158659221202 is a `hidden beast` number, since 2 + 1 + 58 + 6 + 592 + 2 + 1 + 2 + 0 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (2158659221203) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 548863 + ... + 2149085.

Almost surely, 2^{2158659221202} is an apocalyptic number.

2158659221202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2158659221202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2641848206976).

2158659221202 is an abundant number, since it is smaller than the sum of its proper divisors (3125037192750).

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

2158659221202 is a wasteful number, since it uses less digits than its factorization.

2158659221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601005 (or 1600996 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 2158659221202 in words is "two trillion, one hundred fifty-eight billion, six hundred fifty-nine million, two hundred twenty-one thousand, two hundred two".