221332011210 has 24 divisors (see below), whose sum is σ = 575463229380. Its totient is φ = 59021869632.

The previous prime is 221332011179. The next prime is 221332011233. The reversal of 221332011210 is 12110233122.

221332011210 is a `hidden beast` number, since 221 + 3 + 320 + 1 + 121 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 220393630521 + 938380689 = 469461^2 + 30633^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1229622195 + ... + 1229622374.

Almost surely, 2^221332011210 is an apocalyptic number.

221332011210 is an abundant number, since it is smaller than the sum of its proper divisors (354131218170).

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

221332011210 is a wasteful number, since it uses less digits than its factorization.

221332011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459244582 (or 2459244579 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 221332011210 its reverse (12110233122), we get a palindrome (233442244332).

The spelling of 221332011210 in words is "two hundred twenty-one billion, three hundred thirty-two million, eleven thousand, two hundred ten".