221210110112202 has 48 divisors (see below), whose sum is σ = 490988691772488. Its totient is φ = 71936759324160.

The previous prime is 221210110112141. The next prime is 221210110112207. The reversal of 221210110112202 is 202211011012122.

221210110112202 is a `hidden beast` number, since 221 + 21 + 0 + 110 + 112 + 202 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 131276391523281 + 89933718588921 = 11457591^2 + 9483339^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (221210110112207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32889598 + ... + 39040310.

Almost surely, 2^{221210110112202} is an apocalyptic number.

221210110112202 is an abundant number, since it is smaller than the sum of its proper divisors (269778581660286).

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

221210110112202 is a wasteful number, since it uses less digits than its factorization.

221210110112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6199495 (or 6199492 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221210110112202 its reverse (202211011012122), we get a palindrome (423421121124324).

The spelling of 221210110112202 in words is "two hundred twenty-one trillion, two hundred ten billion, one hundred ten million, one hundred twelve thousand, two hundred two".