2115505101 has 16 divisors (see below), whose sum is σ = 2864541888. Its totient is φ = 1388428800.

The previous prime is 2115505097. The next prime is 2115505127. The reversal of 2115505101 is 1015055112.

It is not a de Polignac number, because 2115505101 - 2² = 2115505097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115505501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609511 + ... + 612971.

It is an arithmetic number, because the mean of its divisors is an integer number (179033868).

Almost surely, 2^2115505101 is an apocalyptic number.

It is an amenable number.

2115505101 is a deficient number, since it is larger than the sum of its proper divisors (749036787).

2115505101 is a wasteful number, since it uses less digits than its factorization.

2115505101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6572.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 2115505101 is about 45994.6203484712. The cubic root of 2115505101 is about 1283.7231081341.

The spelling of 2115505101 in words is "two billion, one hundred fifteen million, five hundred five thousand, one hundred one".