221201202222210 has 64 divisors (see below), whose sum is σ = 606731618018304. Its totient is φ = 50559581419200.

The previous prime is 221201202222167. The next prime is 221201202222241. The reversal of 221201202222210 is 12222202102122.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8205105 + ... + 22577115.

It is an arithmetic number, because the mean of its divisors is an integer number (9480181531536).

Almost surely, 2^{221201202222210} is an apocalyptic number.

221201202222210 is an abundant number, since it is smaller than the sum of its proper divisors (385530415796094).

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

221201202222210 is a wasteful number, since it uses less digits than its factorization.

221201202222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14445319.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221201202222210 its reverse (12222202102122), we get a palindrome (233423404324332).

The spelling of 221201202222210 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred two million, two hundred twenty-two thousand, two hundred ten".