2121220230 has 32 divisors (see below), whose sum is σ = 5358873600. Its totient is φ = 535887072.

The previous prime is 2121220217. The next prime is 2121220243. The reversal of 2121220230 is 320221212.

It is a happy number.

2121220230 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2121220217) and next prime (2121220243).

It is a super-2 number, since 2×2121220230² = 8999150528322505800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1860150 + ... + 1861289.

It is an arithmetic number, because the mean of its divisors is an integer number (167464800).

Almost surely, 2^2121220230 is an apocalyptic number.

2121220230 is an abundant number, since it is smaller than the sum of its proper divisors (3237653370).

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

2121220230 is a wasteful number, since it uses less digits than its factorization.

2121220230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721468.

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

The square root of 2121220230 is about 46056.7066777467. The cubic root of 2121220230 is about 1284.8780799506.

Adding to 2121220230 its reverse (320221212), we get a palindrome (2441441442).

The spelling of 2121220230 in words is "two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred thirty".