222121101010 has 32 divisors (see below), whose sum is σ = 407695991040. Its totient is φ = 87100523328.

The previous prime is 222121101001. The next prime is 222121101061. The reversal of 222121101010 is 10101121222.

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, 476851 + ... + 819529.

It is an arithmetic number, because the mean of its divisors is an integer number (12740499720).

Almost surely, 2^222121101010 is an apocalyptic number.

222121101010 is a deficient number, since it is larger than the sum of its proper divisors (185574890030).

222121101010 is a wasteful number, since it uses less digits than its factorization.

222121101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343962.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 222121101010 its reverse (10101121222), we get a palindrome (232222222232).

The spelling of 222121101010 in words is "two hundred twenty-two billion, one hundred twenty-one million, one hundred one thousand, ten".