221200142312 has 32 divisors (see below), whose sum is σ = 416601360000. Its totient is φ = 110106705408.

The previous prime is 221200142257. The next prime is 221200142327. The reversal of 221200142312 is 213241002122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7880639 + ... + 7908657.

It is an arithmetic number, because the mean of its divisors is an integer number (13018792500).

Almost surely, 2^221200142312 is an apocalyptic number.

It is an amenable number.

221200142312 is a deficient number, since it is larger than the sum of its proper divisors (195401217688).

221200142312 is a wasteful number, since it uses less digits than its factorization.

221200142312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32393 (or 32389 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221200142312 its reverse (213241002122), we get a palindrome (434441144434).

The spelling of 221200142312 in words is "two hundred twenty-one billion, two hundred million, one hundred forty-two thousand, three hundred twelve".