20022131 has 8 divisors (see below), whose sum is σ = 20339424. Its totient is φ = 19707520.

The previous prime is 20022127. The next prime is 20022137. The reversal of 20022131 is 13122002.

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 20022131 - 2² = 20022127 is a prime.

It is a super-2 number, since 2×20022131² = 801771459562322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20022137) 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, 18341 + ... + 19401.

It is an arithmetic number, because the mean of its divisors is an integer number (2542428).

Almost surely, 2^20022131 is an apocalyptic number.

20022131 is a deficient number, since it is larger than the sum of its proper divisors (317293).

20022131 is a wasteful number, since it uses less digits than its factorization.

20022131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341.

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

The square root of 20022131 is about 4474.6095919085. The cubic root of 20022131 is about 271.5418460462.

Adding to 20022131 its reverse (13122002), we get a palindrome (33144133).

The spelling of 20022131 in words is "twenty million, twenty-two thousand, one hundred thirty-one".