1015116121 has 4 divisors (see below), whose sum is σ = 1074828852. Its totient is φ = 955403392.

The previous prime is 1015116119. The next prime is 1015116131. The reversal of 1015116121 is 1216115101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 417998025 + 597118096 = 20445^2 + 24436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1015116121 - 2¹ = 1015116119 is a prime.

It is a super-2 number, since 2×1015116121² = 2060921478228173282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1015116131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29856340 + ... + 29856373.

It is an arithmetic number, because the mean of its divisors is an integer number (268707213).

Almost surely, 2^1015116121 is an apocalyptic number.

It is an amenable number.

1015116121 is a deficient number, since it is larger than the sum of its proper divisors (59712731).

1015116121 is an equidigital number, since it uses as much as digits as its factorization.

1015116121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59712730.

The product of its (nonzero) digits is 60, while the sum is 19.

The square root of 1015116121 is about 31860.8870089958. The cubic root of 1015116121 is about 1005.0135295160.

The spelling of 1015116121 in words is "one billion, fifteen million, one hundred sixteen thousand, one hundred twenty-one".