2220412421 has 4 divisors (see below), whose sum is σ = 2221596000. Its totient is φ = 2219228844.

The previous prime is 2220412391. The next prime is 2220412423. The reversal of 2220412421 is 1242140222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1242140222 = 2 ⋅621070111.

It is a cyclic number.

It is not a de Polignac number, because 2220412421 - 2⁶ = 2220412357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220412393 and 2220412402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220412423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588971 + ... + 592728.

It is an arithmetic number, because the mean of its divisors is an integer number (555399000).

Almost surely, 2^2220412421 is an apocalyptic number.

It is an amenable number.

2220412421 is a deficient number, since it is larger than the sum of its proper divisors (1183579).

2220412421 is a wasteful number, since it uses less digits than its factorization.

2220412421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183578.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2220412421 is about 47121.2523284346. The cubic root of 2220412421 is about 1304.6015275639.

Adding to 2220412421 its reverse (1242140222), we get a palindrome (3462552643).

The spelling of 2220412421 in words is "two billion, two hundred twenty million, four hundred twelve thousand, four hundred twenty-one".