2151225210 has 16 divisors (see below), whose sum is σ = 5162940576. Its totient is φ = 573660048.

The previous prime is 2151225179. The next prime is 2151225217. The reversal of 2151225210 is 125221512.

It is not an unprimeable number, because it can be changed into a prime (2151225217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35853724 + ... + 35853783.

It is an arithmetic number, because the mean of its divisors is an integer number (322683786).

Almost surely, 2^2151225210 is an apocalyptic number.

2151225210 is an abundant number, since it is smaller than the sum of its proper divisors (3011715366).

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

2151225210 is a wasteful number, since it uses less digits than its factorization.

2151225210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71707517.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2151225210 is about 46381.3023749873. The cubic root of 2151225210 is about 1290.9080020354.

Adding to 2151225210 its reverse (125221512), we get a palindrome (2276446722).

The spelling of 2151225210 in words is "two billion, one hundred fifty-one million, two hundred twenty-five thousand, two hundred ten".