21402241001300 has 36 divisors (see below), whose sum is σ = 46499294333856. Its totient is φ = 8550494306400.

The previous prime is 21402241001293. The next prime is 21402241001303. The reversal of 21402241001300 is 310014220412.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21402241001303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129943466 + ... + 130108065.

Almost surely, 2^{21402241001300} is an apocalyptic number.

21402241001300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21402241001300 is an abundant number, since it is smaller than the sum of its proper divisors (25097053332556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21402241001300 is a wasteful number, since it uses less digits than its factorization.

21402241001300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260052368 (or 260052361 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21402241001300 its reverse (310014220412), we get a palindrome (21712255221712).

The spelling of 21402241001300 in words is "twenty-one trillion, four hundred two billion, two hundred forty-one million, one thousand, three hundred".