221201312021102 has 16 divisors (see below), whose sum is σ = 387270382141440. Its totient is φ = 92783529054168.

The previous prime is 221201312021057. The next prime is 221201312021111. The reversal of 221201312021102 is 201120213102122.

221201312021102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168086102702 + ... + 168086104017.

It is an arithmetic number, because the mean of its divisors is an integer number (24204398883840).

Almost surely, 2^{221201312021102} is an apocalyptic number.

221201312021102 is a deficient number, since it is larger than the sum of its proper divisors (166069070120338).

221201312021102 is a wasteful number, since it uses less digits than its factorization.

221201312021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336172206775.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 221201312021102 its reverse (201120213102122), we get a palindrome (422321525123224).

The spelling of 221201312021102 in words is "two hundred twenty-one trillion, two hundred one billion, three hundred twelve million, twenty-one thousand, one hundred two".