12221101021110 has 64 divisors (see below), whose sum is σ = 30610557823680. Its totient is φ = 3118736445440.

The previous prime is 12221101021099. The next prime is 12221101021117. The reversal of 12221101021110 is 1112010112221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12221101021110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221101021117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62057631 + ... + 62254250.

It is an arithmetic number, because the mean of its divisors is an integer number (478289965995).

Almost surely, 2^{12221101021110} is an apocalyptic number.

12221101021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221101021110 is an abundant number, since it is smaller than the sum of its proper divisors (18389456802570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12221101021110 is a wasteful number, since it uses less digits than its factorization.

12221101021110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124312033.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12221101021110 its reverse (1112010112221), we get a palindrome (13333111133331).

The spelling of 12221101021110 in words is "twelve trillion, two hundred twenty-one billion, one hundred one million, twenty-one thousand, one hundred ten".