2115450120 has 128 divisors (see below), whose sum is σ = 7634764800. Its totient is φ = 458078976.

The previous prime is 2115450089. The next prime is 2115450191. The reversal of 2115450120 is 210545112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50314 + ... + 82233.

It is an arithmetic number, because the mean of its divisors is an integer number (59646600).

Almost surely, 2^2115450120 is an apocalyptic number.

2115450120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115450120 is an abundant number, since it is smaller than the sum of its proper divisors (5519314680).

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

2115450120 is a wasteful number, since it uses less digits than its factorization.

2115450120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132587 (or 132583 counting only the distinct ones).

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

The square root of 2115450120 is about 45994.0226551234. The cubic root of 2115450120 is about 1283.7119869143.

Adding to 2115450120 its reverse (210545112), we get a palindrome (2325995232).

The spelling of 2115450120 in words is "two billion, one hundred fifteen million, four hundred fifty thousand, one hundred twenty".