21231142203101 has 8 divisors (see below), whose sum is σ = 21757069200384. Its totient is φ = 20705600646880.

The previous prime is 21231142203071. The next prime is 21231142203113. The reversal of 21231142203101 is 10130224113212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21231142203101 is a prime.

It is a super-2 number, since 2×21231142203101² (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 (21231142203121) 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, 96248735 + ... + 96469068.

It is an arithmetic number, because the mean of its divisors is an integer number (2719633650048).

Almost surely, 2^{21231142203101} is an apocalyptic number.

It is an amenable number.

21231142203101 is a deficient number, since it is larger than the sum of its proper divisors (525926997283).

21231142203101 is a wasteful number, since it uses less digits than its factorization.

21231142203101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192720531.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21231142203101 its reverse (10130224113212), we get a palindrome (31361366316313).

The spelling of 21231142203101 in words is "twenty-one trillion, two hundred thirty-one billion, one hundred forty-two million, two hundred three thousand, one hundred one".