221012021210110 has 32 divisors (see below), whose sum is σ = 430643112560640. Its totient is φ = 81181617666048.

The previous prime is 221012021210107. The next prime is 221012021210143. The reversal of 221012021210110 is 11012120210122.

It is a super-2 number, since 2×221012021210110² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4404359550 + ... + 4404409729.

It is an arithmetic number, because the mean of its divisors is an integer number (13457597267520).

Almost surely, 2^{221012021210110} is an apocalyptic number.

221012021210110 is a deficient number, since it is larger than the sum of its proper divisors (209631091350530).

221012021210110 is a wasteful number, since it uses less digits than its factorization.

221012021210110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8808769492.

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

Adding to 221012021210110 its reverse (11012120210122), we get a palindrome (232024141420232).

The spelling of 221012021210110 in words is "two hundred twenty-one trillion, twelve billion, twenty-one million, two hundred ten thousand, one hundred ten".