4222646421 has 16 divisors (see below), whose sum is σ = 6467854464. Its totient is φ = 2400436224.

The previous prime is 4222646399. The next prime is 4222646443. The reversal of 4222646421 is 1246462224.

It is an interprime number because it is at equal distance from previous prime (4222646399) and next prime (4222646443).

It is not a de Polignac number, because 4222646421 - 2⁶ = 4222646357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4222644421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516876 + ... + 524981.

It is an arithmetic number, because the mean of its divisors is an integer number (404240904).

Almost surely, 2^4222646421 is an apocalyptic number.

It is an amenable number.

4222646421 is a deficient number, since it is larger than the sum of its proper divisors (2245208043).

4222646421 is a wasteful number, since it uses less digits than its factorization.

4222646421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042060.

The product of its digits is 36864, while the sum is 33.

The square root of 4222646421 is about 64981.8930241340. The cubic root of 4222646421 is about 1616.3233213161.

The spelling of 4222646421 in words is "four billion, two hundred twenty-two million, six hundred forty-six thousand, four hundred twenty-one".