1220040102 has 16 divisors (see below), whose sum is σ = 2450832192. Its totient is φ = 404888040.

The previous prime is 1220040091. The next prime is 1220040131. The reversal of 1220040102 is 2010400221.

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, 446524 + ... + 449247.

It is an arithmetic number, because the mean of its divisors is an integer number (153177012).

Almost surely, 2^1220040102 is an apocalyptic number.

1220040102 is an abundant number, since it is smaller than the sum of its proper divisors (1230792090).

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

1220040102 is a wasteful number, since it uses less digits than its factorization.

1220040102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896003.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1220040102 is about 34929.0724468887. The cubic root of 1220040102 is about 1068.5414377198.

Adding to 1220040102 its reverse (2010400221), we get a palindrome (3230440323).

The spelling of 1220040102 in words is "one billion, two hundred twenty million, forty thousand, one hundred two".