1220211220110 has 32 divisors (see below), whose sum is σ = 2939393590560. Its totient is φ = 324180029568.

The previous prime is 1220211220093. The next prime is 1220211220127. The reversal of 1220211220110 is 110221120221.

It is an interprime number because it is at equal distance from previous prime (1220211220093) and next prime (1220211220127).

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220211220110.

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, 75593617 + ... + 75609756.

It is an arithmetic number, because the mean of its divisors is an integer number (91856049705).

Almost surely, 2^{1220211220110} is an apocalyptic number.

1220211220110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220211220110 is an abundant number, since it is smaller than the sum of its proper divisors (1719182370450).

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

1220211220110 is a wasteful number, since it uses less digits than its factorization.

1220211220110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151203652.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1220211220110 its reverse (110221120221), we get a palindrome (1330432340331).

The spelling of 1220211220110 in words is "one trillion, two hundred twenty billion, two hundred eleven million, two hundred twenty thousand, one hundred ten".