20222137 has 24 divisors (see below), whose sum is σ = 23896320. Its totient is φ = 16990560.

The previous prime is 20222123. The next prime is 20222161. The reversal of 20222137 is 73122202.

It is a de Polignac number, because none of the positive numbers 2^k-20222137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20222117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145414 + ... + 145552.

It is an arithmetic number, because the mean of its divisors is an integer number (995680).

Almost surely, 2^20222137 is an apocalyptic number.

It is an amenable number.

20222137 is a deficient number, since it is larger than the sum of its proper divisors (3674183).

20222137 is a wasteful number, since it uses less digits than its factorization.

20222137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20222137 is about 4496.9030454303. The cubic root of 20222137 is about 272.4430181335.

Adding to 20222137 its reverse (73122202), we get a palindrome (93344339).

The spelling of 20222137 in words is "twenty million, two hundred twenty-two thousand, one hundred thirty-seven".