22016291 has 4 divisors (see below), whose sum is σ = 24017784. Its totient is φ = 20014800.

The previous prime is 22016287. The next prime is 22016321. The reversal of 22016291 is 19261022.

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 22016291 - 2² = 22016287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22016201) 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, 1000730 + ... + 1000751.

It is an arithmetic number, because the mean of its divisors is an integer number (6004446).

Almost surely, 2^22016291 is an apocalyptic number.

22016291 is a deficient number, since it is larger than the sum of its proper divisors (2001493).

22016291 is a wasteful number, since it uses less digits than its factorization.

22016291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001492.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 22016291 is about 4692.1520648845. The cubic root of 22016291 is about 280.2730796715.

The spelling of 22016291 in words is "twenty-two million, sixteen thousand, two hundred ninety-one".