20122239 has 4 divisors (see below), whose sum is σ = 26829656. Its totient is φ = 13414824.

The previous prime is 20122213. The next prime is 20122241. The reversal of 20122239 is 93222102.

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

It is not a de Polignac number, because 20122239 - 2¹³ = 20114047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123239) 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, 3353704 + ... + 3353709.

It is an arithmetic number, because the mean of its divisors is an integer number (6707414).

Almost surely, 2^20122239 is an apocalyptic number.

20122239 is a deficient number, since it is larger than the sum of its proper divisors (6707417).

20122239 is an equidigital number, since it uses as much as digits as its factorization.

20122239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6707416.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20122239 is about 4485.7818716473. The cubic root of 20122239 is about 271.9936516324.

The spelling of 20122239 in words is "twenty million, one hundred twenty-two thousand, two hundred thirty-nine".