2121516086 has 16 divisors (see below), whose sum is σ = 3225484800. Its totient is φ = 1046379048.

The previous prime is 2121515987. The next prime is 2121516097. The reversal of 2121516086 is 6806151212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187745 + ... + 198723.

It is an arithmetic number, because the mean of its divisors is an integer number (201592800).

Almost surely, 2^2121516086 is an apocalyptic number.

2121516086 is a deficient number, since it is larger than the sum of its proper divisors (1103968714).

2121516086 is a wasteful number, since it uses less digits than its factorization.

2121516086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 2121516086 is about 46059.9184324072. The cubic root of 2121516086 is about 1284.9378130564.

Adding to 2121516086 its reverse (6806151212), we get a palindrome (8927667298).

The spelling of 2121516086 in words is "two billion, one hundred twenty-one million, five hundred sixteen thousand, eighty-six".