1221110102110 has 32 divisors (see below), whose sum is σ = 2301391310400. Its totient is φ = 465612753408.

The previous prime is 1221110102101. The next prime is 1221110102111. The reversal of 1221110102110 is 112010111221.

It is a happy number.

It is a super-2 number, since 2×1221110102110² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221110102111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8992635 + ... + 9127414.

It is an arithmetic number, because the mean of its divisors is an integer number (71918478450).

Almost surely, 2^{1221110102110} is an apocalyptic number.

1221110102110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221110102110 is a deficient number, since it is larger than the sum of its proper divisors (1080281208290).

1221110102110 is a wasteful number, since it uses less digits than its factorization.

1221110102110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18120372.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1221110102110 its reverse (112010111221), we get a palindrome (1333120213331).

The spelling of 1221110102110 in words is "one trillion, two hundred twenty-one billion, one hundred ten million, one hundred two thousand, one hundred ten".