1220620110 has 16 divisors (see below), whose sum is σ = 2929488336. Its totient is φ = 325498688.

The previous prime is 1220620109. The next prime is 1220620123. The reversal of 1220620110 is 110260221.

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 1220620110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20343639 + ... + 20343698.

It is an arithmetic number, because the mean of its divisors is an integer number (183093021).

Almost surely, 2^1220620110 is an apocalyptic number.

1220620110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220620110 is an abundant number, since it is smaller than the sum of its proper divisors (1708868226).

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

1220620110 is a wasteful number, since it uses less digits than its factorization.

1220620110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40687347.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1220620110 is about 34937.3741142634. The cubic root of 1220620110 is about 1068.7107393669.

Adding to 1220620110 its reverse (110260221), we get a palindrome (1330880331).

The spelling of 1220620110 in words is "one billion, two hundred twenty million, six hundred twenty thousand, one hundred ten".