4222042521 has 4 divisors (see below), whose sum is σ = 5629390032. Its totient is φ = 2814695012.

The previous prime is 4222042519. The next prime is 4222042547. The reversal of 4222042521 is 1252402224.

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.

It is a cyclic number.

It is not a de Polignac number, because 4222042521 - 2¹ = 4222042519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4222042491 and 4222042500.

It is not an unprimeable number, because it can be changed into a prime (4222041521) 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, 703673751 + ... + 703673756.

It is an arithmetic number, because the mean of its divisors is an integer number (1407347508).

Almost surely, 2^4222042521 is an apocalyptic number.

It is an amenable number.

4222042521 is a deficient number, since it is larger than the sum of its proper divisors (1407347511).

4222042521 is a wasteful number, since it uses less digits than its factorization.

4222042521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407347510.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 4222042521 is about 64977.2461789510. The cubic root of 4222042521 is about 1616.2462650428.

Adding to 4222042521 its reverse (1252402224), we get a palindrome (5474444745).

The spelling of 4222042521 in words is "four billion, two hundred twenty-two million, forty-two thousand, five hundred twenty-one".