101215500000 has 168 divisors, whose sum is σ = 332114030136. Its totient is φ = 26990400000.

The previous prime is 101215499989. The next prime is 101215500013. The reversal of 101215500000 is 5512101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1466262 + ... + 1533738.

It is an arithmetic number, because the mean of its divisors is an integer number (1976869227).

Almost surely, 2^101215500000 is an apocalyptic number.

101215500000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101215500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166057015068).

101215500000 is an abundant number, since it is smaller than the sum of its proper divisors (230898530136).

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

101215500000 is an frugal number, since it uses more digits than its factorization.

101215500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67520 (or 67487 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The spelling of 101215500000 in words is "one hundred one billion, two hundred fifteen million, five hundred thousand".