221011021202 has 24 divisors (see below), whose sum is σ = 352460912436. Its totient is φ = 103917682688.

The previous prime is 221011021201. The next prime is 221011021229. The reversal of 221011021202 is 202120110122.

It can be written as a sum of positive squares in 6 ways, for example, as 145962966601 + 75048054601 = 382051^2 + 273949^2 .

It is not an unprimeable number, because it can be changed into a prime (221011021201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 529298 + ... + 849810.

Almost surely, 2^221011021202 is an apocalyptic number.

221011021202 is a deficient number, since it is larger than the sum of its proper divisors (131449891234).

221011021202 is a wasteful number, since it uses less digits than its factorization.

221011021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321742 (or 321725 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221011021202 its reverse (202120110122), we get a palindrome (423131131324).

The spelling of 221011021202 in words is "two hundred twenty-one billion, eleven million, twenty-one thousand, two hundred two".