1221112200110 has 32 divisors (see below), whose sum is σ = 2397892129632. Its totient is φ = 444027502080.

The previous prime is 1221112200083. The next prime is 1221112200179. The reversal of 1221112200110 is 110022111221.

It is a super-2 number, since 2×1221112200110² (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, 3994874 + ... + 4289666.

It is an arithmetic number, because the mean of its divisors is an integer number (74934129051).

Almost surely, 2^{1221112200110} is an apocalyptic number.

1221112200110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221112200110 is a deficient number, since it is larger than the sum of its proper divisors (1176779929522).

1221112200110 is a wasteful number, since it uses less digits than its factorization.

1221112200110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332468.

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

Adding to 1221112200110 its reverse (110022111221), we get a palindrome (1331134311331).

The spelling of 1221112200110 in words is "one trillion, two hundred twenty-one billion, one hundred twelve million, two hundred thousand, one hundred ten".