4002222021 has 8 divisors (see below), whose sum is σ = 6098624064. Its totient is φ = 2286984000.

The previous prime is 4002222013. The next prime is 4002222079. The reversal of 4002222021 is 1202222004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4002222021 - 2³ = 4002222013 is a prime.

It is a super-2 number, since 2×4002222021² = 32035562210754648882, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002222121) 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, 95290980 + ... + 95291021.

It is an arithmetic number, because the mean of its divisors is an integer number (762328008).

Almost surely, 2^4002222021 is an apocalyptic number.

It is an amenable number.

4002222021 is a deficient number, since it is larger than the sum of its proper divisors (2096402043).

4002222021 is a wasteful number, since it uses less digits than its factorization.

4002222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190582011.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4002222021 is about 63263.1173828796. The cubic root of 4002222021 is about 1587.6949340966.

Adding to 4002222021 its reverse (1202222004), we get a palindrome (5204444025).

The spelling of 4002222021 in words is "four billion, two million, two hundred twenty-two thousand, twenty-one".