4021421222 has 16 divisors (see below), whose sum is σ = 7424162592. Its totient is φ = 1590891840.

The previous prime is 4021421221. The next prime is 4021421249. The reversal of 4021421222 is 2221241204.

4021421222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 4021421194 and 4021421203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021421221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11047679 + ... + 11048042.

It is an arithmetic number, because the mean of its divisors is an integer number (464010162).

Almost surely, 2^4021421222 is an apocalyptic number.

4021421222 is a deficient number, since it is larger than the sum of its proper divisors (3402741370).

4021421222 is a wasteful number, since it uses less digits than its factorization.

4021421222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22095743.

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

The square root of 4021421222 is about 63414.6767081564. The cubic root of 4021421222 is about 1590.2296810983.

Adding to 4021421222 its reverse (2221241204), we get a palindrome (6242662426).

The spelling of 4021421222 in words is "four billion, twenty-one million, four hundred twenty-one thousand, two hundred twenty-two".