2102204420 has 24 divisors (see below), whose sum is σ = 4420372824. Its totient is φ = 839787776.

The previous prime is 2102204399. The next prime is 2102204453. The reversal of 2102204420 is 244022012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 170250304 + 1931954116 = 13048^2 + 43954^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52529 + ... + 83448.

It is an arithmetic number, because the mean of its divisors is an integer number (184182201).

Almost surely, 2^2102204420 is an apocalyptic number.

2102204420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102204420 is an abundant number, since it is smaller than the sum of its proper divisors (2318168404).

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

2102204420 is a wasteful number, since it uses less digits than its factorization.

2102204420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136759 (or 136757 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2102204420 is about 45849.8028349087. The cubic root of 2102204420 is about 1281.0270931036.

Adding to 2102204420 its reverse (244022012), we get a palindrome (2346226432).

The spelling of 2102204420 in words is "two billion, one hundred two million, two hundred four thousand, four hundred twenty".