215200134402 has 32 divisors (see below), whose sum is σ = 469547864064. Its totient is φ = 65209342800.

The previous prime is 215200134377. The next prime is 215200134407. The reversal of 215200134402 is 204431002512.

It is a super-2 number, since 2×215200134402² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215200134407) 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, 1869127 + ... + 1980917.

It is an arithmetic number, because the mean of its divisors is an integer number (14673370752).

Almost surely, 2^215200134402 is an apocalyptic number.

215200134402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

215200134402 is an abundant number, since it is smaller than the sum of its proper divisors (254347729662).

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

215200134402 is a wasteful number, since it uses less digits than its factorization.

215200134402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140974.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 215200134402 its reverse (204431002512), we get a palindrome (419631136914).

The spelling of 215200134402 in words is "two hundred fifteen billion, two hundred million, one hundred thirty-four thousand, four hundred two".