2115120550 has 24 divisors (see below), whose sum is σ = 4025619576. Its totient is φ = 826371840.

The previous prime is 2115120541. The next prime is 2115120551. The reversal of 2115120550 is 550215112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115120551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 489739 + ... + 494038.

It is an arithmetic number, because the mean of its divisors is an integer number (167734149).

Almost surely, 2^2115120550 is an apocalyptic number.

2115120550 is a deficient number, since it is larger than the sum of its proper divisors (1910499026).

2115120550 is a wasteful number, since it uses less digits than its factorization.

2115120550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983832 (or 983827 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 2115120550 is about 45990.4397674125. The cubic root of 2115120550 is about 1283.6453194743.

Adding to 2115120550 its reverse (550215112), we get a palindrome (2665335662).

The spelling of 2115120550 in words is "two billion, one hundred fifteen million, one hundred twenty thousand, five hundred fifty".