2230121220 has 24 divisors (see below), whose sum is σ = 6244339584. Its totient is φ = 594698976.

The previous prime is 2230121213. The next prime is 2230121237. The reversal of 2230121220 is 221210322.

It is a happy number.

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 2230121220.

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, 18584284 + ... + 18584403.

It is an arithmetic number, because the mean of its divisors is an integer number (260180816).

Almost surely, 2^2230121220 is an apocalyptic number.

2230121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2230121220 is an abundant number, since it is smaller than the sum of its proper divisors (4014218364).

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

2230121220 is a wasteful number, since it uses less digits than its factorization.

2230121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37168699 (or 37168697 counting only the distinct ones).

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

The square root of 2230121220 is about 47224.1592831466. The cubic root of 2230121220 is about 1306.5002285519.

Adding to 2230121220 its reverse (221210322), we get a palindrome (2451331542).

The spelling of 2230121220 in words is "two billion, two hundred thirty million, one hundred twenty-one thousand, two hundred twenty".