4221080691 has 4 divisors (see below), whose sum is σ = 5628107592. Its totient is φ = 2814053792.

The previous prime is 4221080659. The next prime is 4221080701. The reversal of 4221080691 is 1960801224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4221080691 - 2⁵ = 4221080659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4221080651) 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, 703513446 + ... + 703513451.

It is an arithmetic number, because the mean of its divisors is an integer number (1407026898).

Almost surely, 2^4221080691 is an apocalyptic number.

4221080691 is a deficient number, since it is larger than the sum of its proper divisors (1407026901).

4221080691 is a wasteful number, since it uses less digits than its factorization.

4221080691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407026900.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 4221080691 is about 64969.8444741866. The cubic root of 4221080691 is about 1616.1235225392.

The spelling of 4221080691 in words is "four billion, two hundred twenty-one million, eighty thousand, six hundred ninety-one".