1220101110 has 32 divisors (see below), whose sum is σ = 3253603680. Its totient is φ = 325360224.

The previous prime is 1220101087. The next prime is 1220101123. The reversal of 1220101110 is 111010221.

It is a happy number.

1220101110 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1220101092 and 1220101101.

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, 2259177 + ... + 2259716.

It is an arithmetic number, because the mean of its divisors is an integer number (101675115).

Almost surely, 2^1220101110 is an apocalyptic number.

1220101110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220101110 is an abundant number, since it is smaller than the sum of its proper divisors (2033502570).

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

1220101110 is a wasteful number, since it uses less digits than its factorization.

1220101110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4518909 (or 4518903 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1220101110 is about 34929.9457485980. The cubic root of 1220101110 is about 1068.5592481971.

Adding to 1220101110 its reverse (111010221), we get a palindrome (1331111331).

The spelling of 1220101110 in words is "one billion, two hundred twenty million, one hundred one thousand, one hundred ten".