1221110022110 has 32 divisors (see below), whose sum is σ = 2406472479072. Its totient is φ = 442436964480.

The previous prime is 1221110022071. The next prime is 1221110022149. The reversal of 1221110022110 is 112200111221.

It is an interprime number because it is at equal distance from previous prime (1221110022071) and next prime (1221110022149).

It is a super-2 number, since 2×1221110022110² (a number of 25 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, 20007437 + ... + 20068376.

It is an arithmetic number, because the mean of its divisors is an integer number (75202264971).

Almost surely, 2^{1221110022110} is an apocalyptic number.

1221110022110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221110022110 is a deficient number, since it is larger than the sum of its proper divisors (1185362456962).

1221110022110 is a wasteful number, since it uses less digits than its factorization.

1221110022110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40076108.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1221110022110 its reverse (112200111221), we get a palindrome (1333310133331).

The spelling of 1221110022110 in words is "one trillion, two hundred twenty-one billion, one hundred ten million, twenty-two thousand, one hundred ten".