7021221337 has 8 divisors (see below), whose sum is σ = 7631983296. Its totient is φ = 6420554832.

The previous prime is 7021221307. The next prime is 7021221353. The reversal of 7021221337 is 7331221207.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 7021221337 - 2¹⁵ = 7021188569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7021221307) 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, 2522413 + ... + 2525194.

It is an arithmetic number, because the mean of its divisors is an integer number (953997912).

Almost surely, 2^7021221337 is an apocalyptic number.

It is an amenable number.

7021221337 is a deficient number, since it is larger than the sum of its proper divisors (610761959).

7021221337 is a wasteful number, since it uses less digits than its factorization.

7021221337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5047727.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 7021221337 is about 83792.7284255621. The cubic root of 7021221337 is about 1914.8623257923.

The spelling of 7021221337 in words is "seven billion, twenty-one million, two hundred twenty-one thousand, three hundred thirty-seven".