1215340355100 has 36 divisors (see below), whose sum is σ = 3516384761624. Its totient is φ = 324090761280.

The previous prime is 1215340355083. The next prime is 1215340355113. The reversal of 1215340355100 is 15530435121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2025566959 + ... + 2025567558.

Almost surely, 2^{1215340355100} is an apocalyptic number.

1215340355100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215340355100 is an abundant number, since it is smaller than the sum of its proper divisors (2301044406524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1215340355100 is a wasteful number, since it uses less digits than its factorization.

1215340355100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051134534 (or 4051134527 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 1215340355100 in words is "one trillion, two hundred fifteen billion, three hundred forty million, three hundred fifty-five thousand, one hundred".