215134010112 has 144 divisors (see below), whose sum is σ = 659363265792. Its totient is φ = 60997447680.

The previous prime is 215134010101. The next prime is 215134010129. The reversal of 215134010112 is 211010431512.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551518 + ... + 856994.

It is an arithmetic number, because the mean of its divisors is an integer number (4578911568).

Almost surely, 2^215134010112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215134010112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329681632896).

215134010112 is an abundant number, since it is smaller than the sum of its proper divisors (444229255680).

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

215134010112 is a wasteful number, since it uses less digits than its factorization.

215134010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305634 (or 305620 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 215134010112 its reverse (211010431512), we get a palindrome (426144441624).

The spelling of 215134010112 in words is "two hundred fifteen billion, one hundred thirty-four million, ten thousand, one hundred twelve".