20221152 has 48 divisors (see below), whose sum is σ = 60665472. Its totient is φ = 5777280.

The previous prime is 20221151. The next prime is 20221153. The reversal of 20221152 is 25112202.

It is an interprime number because it is at equal distance from previous prime (20221151) and next prime (20221153).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221151) 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, 14374 + ... + 15717.

It is an arithmetic number, because the mean of its divisors is an integer number (1263864).

Almost surely, 2^20221152 is an apocalyptic number.

It is an amenable number.

20221152 is an abundant number, since it is smaller than the sum of its proper divisors (40444320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20221152 is a wasteful number, since it uses less digits than its factorization.

20221152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30111 (or 30103 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20221152 is about 4496.7935242793. The cubic root of 20221152 is about 272.4385945863.

Adding to 20221152 its reverse (25112202), we get a palindrome (45333354).

The spelling of 20221152 in words is "twenty million, two hundred twenty-one thousand, one hundred fifty-two".