221201210012210 has 8 divisors (see below), whose sum is σ = 398162178021996. Its totient is φ = 88480484004880.

The previous prime is 221201210012197. The next prime is 221201210012249. The reversal of 221201210012210 is 12210012102122.

It can be written as a sum of positive squares in 2 ways, for example, as 220399588831321 + 801621180889 = 14845861^2 + 895333^2 .

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, 11060060500601 + ... + 11060060500620.

Almost surely, 2^{221201210012210} is an apocalyptic number.

221201210012210 is a deficient number, since it is larger than the sum of its proper divisors (176960968009786).

221201210012210 is a wasteful number, since it uses less digits than its factorization.

221201210012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22120121001228.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221201210012210 its reverse (12210012102122), we get a palindrome (233411222114332).

The spelling of 221201210012210 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred ten million, twelve thousand, two hundred ten".