102212556306 has 64 divisors (see below), whose sum is σ = 238306295808. Its totient is φ = 28624434048.

The previous prime is 102212556289. The next prime is 102212556311. The reversal of 102212556306 is 603655212201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 327286 + ... + 558158.

It is an arithmetic number, because the mean of its divisors is an integer number (3723535872).

Almost surely, 2^102212556306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102212556306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119153147904).

102212556306 is an abundant number, since it is smaller than the sum of its proper divisors (136093739502).

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

102212556306 is a wasteful number, since it uses less digits than its factorization.

102212556306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231095.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 102212556306 its reverse (603655212201), we get a palindrome (705867768507).

The spelling of 102212556306 in words is "one hundred two billion, two hundred twelve million, five hundred fifty-six thousand, three hundred six".