221201011021210 has 16 divisors (see below), whose sum is σ = 434358348914592. Its totient is φ = 80436731280400.

The previous prime is 221201011021183. The next prime is 221201011021217. The reversal of 221201011021210 is 12120110102122.

It is not an unprimeable number, because it can be changed into a prime (221201011021217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005459140896 + ... + 1005459141115.

It is an arithmetic number, because the mean of its divisors is an integer number (27147396807162).

Almost surely, 2^{221201011021210} is an apocalyptic number.

221201011021210 is a deficient number, since it is larger than the sum of its proper divisors (213157337893382).

221201011021210 is a wasteful number, since it uses less digits than its factorization.

221201011021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010918282029.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221201011021210 its reverse (12120110102122), we get a palindrome (233321121123332).

The spelling of 221201011021210 in words is "two hundred twenty-one trillion, two hundred one billion, eleven million, twenty-one thousand, two hundred ten".