21231242101401 has 8 divisors (see below), whose sum is σ = 28481993494560. Its totient is φ = 14067326054592.

The previous prime is 21231242101393. The next prime is 21231242101427. The reversal of 21231242101401 is 10410124213212.

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

It is not a de Polignac number, because 21231242101401 - 2³ = 21231242101393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21231242100401) 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, 21708836016 + ... + 21708836993.

It is an arithmetic number, because the mean of its divisors is an integer number (3560249186820).

Almost surely, 2^{21231242101401} is an apocalyptic number.

It is an amenable number.

21231242101401 is a deficient number, since it is larger than the sum of its proper divisors (7250751393159).

21231242101401 is a wasteful number, since it uses less digits than its factorization.

21231242101401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43417673175.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 21231242101401 its reverse (10410124213212), we get a palindrome (31641366314613).

The spelling of 21231242101401 in words is "twenty-one trillion, two hundred thirty-one billion, two hundred forty-two million, one hundred one thousand, four hundred one".