20342241301021 has 16 divisors (see below), whose sum is σ = 21656202577920. Its totient is φ = 19073842381440.

The previous prime is 20342241301001. The next prime is 20342241301033. The reversal of 20342241301021 is 12010314224302.

It is a cyclic number.

It is not a de Polignac number, because 20342241301021 - 2⁷ = 20342241300893 is a prime.

It is a super-2 number, since 2×20342241301021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342241301001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36828736 + ... + 37377001.

It is an arithmetic number, because the mean of its divisors is an integer number (1353512661120).

Almost surely, 2^{20342241301021} is an apocalyptic number.

It is an amenable number.

20342241301021 is a deficient number, since it is larger than the sum of its proper divisors (1313961276899).

20342241301021 is a wasteful number, since it uses less digits than its factorization.

20342241301021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74206044.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20342241301021 its reverse (12010314224302), we get a palindrome (32352555525323).

The spelling of 20342241301021 in words is "twenty trillion, three hundred forty-two billion, two hundred forty-one million, three hundred one thousand, twenty-one".