20331102201021 has 24 divisors (see below), whose sum is σ = 30457351724800. Its totient is φ = 13552941269952.

The previous prime is 20331102201013. The next prime is 20331102201029. The reversal of 20331102201021 is 12010220113302.

20331102201021 is a `hidden beast` number, since 2 + 0 + 331 + 10 + 220 + 102 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (20331102201013) and next prime (20331102201029).

It is not a de Polignac number, because 20331102201021 - 2³ = 20331102201013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20331102200985 and 20331102201003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331102201029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 544045 + ... + 6399858.

Almost surely, 2^{20331102201021} is an apocalyptic number.

It is an amenable number.

20331102201021 is a deficient number, since it is larger than the sum of its proper divisors (10126249523779).

20331102201021 is an equidigital number, since it uses as much as digits as its factorization.

20331102201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6955967 (or 6955955 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20331102201021 its reverse (12010220113302), we get a palindrome (32341322314323).

The spelling of 20331102201021 in words is "twenty trillion, three hundred thirty-one billion, one hundred two million, two hundred one thousand, twenty-one".