21525120201022 has 32 divisors (see below), whose sum is σ = 33459054048000. Its totient is φ = 10374884352000.

The previous prime is 21525120200977. The next prime is 21525120201041. The reversal of 21525120201022 is 22010202152512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16087354 + ... + 17373922.

It is an arithmetic number, because the mean of its divisors is an integer number (1045595439000).

Almost surely, 2^{21525120201022} is an apocalyptic number.

21525120201022 is a deficient number, since it is larger than the sum of its proper divisors (11933933846978).

21525120201022 is a wasteful number, since it uses less digits than its factorization.

21525120201022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287652.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 21525120201022 its reverse (22010202152512), we get a palindrome (43535322353534).

The spelling of 21525120201022 in words is "twenty-one trillion, five hundred twenty-five billion, one hundred twenty million, two hundred one thousand, twenty-two".