2115221310 has 32 divisors (see below), whose sum is σ = 5640590880. Its totient is φ = 564058944.

The previous prime is 2115221267. The next prime is 2115221321. The reversal of 2115221310 is 131225112.

2115221310 is a `hidden beast` number, since 2 + 11 + 522 + 131 + 0 = 666.

It is a super-2 number, since 2×2115221310² = 8948322380556232200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3916807 + ... + 3917346.

It is an arithmetic number, because the mean of its divisors is an integer number (176268465).

Almost surely, 2^2115221310 is an apocalyptic number.

2115221310 is an abundant number, since it is smaller than the sum of its proper divisors (3525369570).

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

2115221310 is a wasteful number, since it uses less digits than its factorization.

2115221310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7834169 (or 7834163 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 2115221310 is about 45991.5351994256. The cubic root of 2115221310 is about 1283.6657025597.

Adding to 2115221310 its reverse (131225112), we get a palindrome (2246446422).

The spelling of 2115221310 in words is "two billion, one hundred fifteen million, two hundred twenty-one thousand, three hundred ten".