22002131 has 8 divisors (see below), whose sum is σ = 23342544. Its totient is φ = 20666880.

The previous prime is 22002121. The next prime is 22002163. The reversal of 22002131 is 13120022.

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 22002131 - 2⁶ = 22002067 is a prime.

It is a super-2 number, since 2×22002131² = 968187537082322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22002121) 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, 10811 + ... + 12683.

It is an arithmetic number, because the mean of its divisors is an integer number (2917818).

Almost surely, 2^22002131 is an apocalyptic number.

22002131 is a deficient number, since it is larger than the sum of its proper divisors (1340413).

22002131 is a wasteful number, since it uses less digits than its factorization.

22002131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 22002131 is about 4690.6429196860. The cubic root of 22002131 is about 280.2129799641.

Adding to 22002131 its reverse (13120022), we get a palindrome (35122153).

The spelling of 22002131 in words is "twenty-two million, two thousand, one hundred thirty-one".