221010221210 has 8 divisors (see below), whose sum is σ = 397818398196. Its totient is φ = 88404088480.

The previous prime is 221010221203. The next prime is 221010221231. The reversal of 221010221210 is 12122010122.

It can be written as a sum of positive squares in 2 ways, for example, as 201350535841 + 19659685369 = 448721^2 + 140213^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11050511051 + ... + 11050511070.

Almost surely, 2^221010221210 is an apocalyptic number.

221010221210 is a deficient number, since it is larger than the sum of its proper divisors (176808176986).

221010221210 is a wasteful number, since it uses less digits than its factorization.

221010221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22101022128.

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

Adding to 221010221210 its reverse (12122010122), we get a palindrome (233132231332).

The spelling of 221010221210 in words is "two hundred twenty-one billion, ten million, two hundred twenty-one thousand, two hundred ten".