2115402155012 has 6 divisors (see below), whose sum is σ = 3701953771278. Its totient is φ = 1057701077504.

The previous prime is 2115402155003. The next prime is 2115402155021. The reversal of 2115402155012 is 2105512045112.

It is an interprime number because it is at equal distance from previous prime (2115402155003) and next prime (2115402155021).

It can be written as a sum of positive squares in only one way, i.e., 2043252971776 + 72149183236 = 1429424^2 + 268606^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264425269373 + ... + 264425269380.

It is an arithmetic number, because the mean of its divisors is an integer number (616992295213).

Almost surely, 2^{2115402155012} is an apocalyptic number.

It is an amenable number.

2115402155012 is a deficient number, since it is larger than the sum of its proper divisors (1586551616266).

2115402155012 is a wasteful number, since it uses less digits than its factorization.

2115402155012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528850538757 (or 528850538755 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

The spelling of 2115402155012 in words is "two trillion, one hundred fifteen billion, four hundred two million, one hundred fifty-five thousand, twelve".