2302121220 has 48 divisors (see below), whose sum is σ = 7366789248. Its totient is φ = 526199040.

The previous prime is 2302121203. The next prime is 2302121243. The reversal of 2302121220 is 221212032.

It is a happy number.

It is a super-2 number, since 2×2302121220² = 10599524223148576800, which contains 22 as substring.

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 2302121220.

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 15 ways as a sum of consecutive naturals, for example, 2740201 + ... + 2741040.

It is an arithmetic number, because the mean of its divisors is an integer number (153474776).

Almost surely, 2^2302121220 is an apocalyptic number.

2302121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2302121220 is an abundant number, since it is smaller than the sum of its proper divisors (5064668028).

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

2302121220 is a wasteful number, since it uses less digits than its factorization.

2302121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481260 (or 5481258 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2302121220 is about 47980.4253836916. The cubic root of 2302121220 is about 1320.4117975980.

Adding to 2302121220 its reverse (221212032), we get a palindrome (2523333252).

The spelling of 2302121220 in words is "two billion, three hundred two million, one hundred twenty-one thousand, two hundred twenty".