21312141401 has 8 divisors (see below), whose sum is σ = 21542956104. Its totient is φ = 21081715200.

The previous prime is 21312141329. The next prime is 21312141413. The reversal of 21312141401 is 10414121312.

It can be written as a sum of positive squares in 4 ways, for example, as 14670054400 + 6642087001 = 121120^2 + 81499^2 .

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-21312141401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21312141701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13865 + ... + 206921.

It is an arithmetic number, because the mean of its divisors is an integer number (2692869513).

Almost surely, 2^21312141401 is an apocalyptic number.

It is an amenable number.

21312141401 is a deficient number, since it is larger than the sum of its proper divisors (230814703).

21312141401 is a wasteful number, since it uses less digits than its factorization.

21312141401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194251.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21312141401 its reverse (10414121312), we get a palindrome (31726262713).

The spelling of 21312141401 in words is "twenty-one billion, three hundred twelve million, one hundred forty-one thousand, four hundred one".