21320100429 has 8 divisors (see below), whose sum is σ = 28454323392. Its totient is φ = 14199638880.

The previous prime is 21320100421. The next prime is 21320100463. The reversal of 21320100429 is 92400102312.

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

It is not a de Polignac number, because 21320100429 - 2³ = 21320100421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21320100399 and 21320100408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320100421) 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, 3436737 + ... + 3442934.

It is an arithmetic number, because the mean of its divisors is an integer number (3556790424).

Almost surely, 2^21320100429 is an apocalyptic number.

It is an amenable number.

21320100429 is a deficient number, since it is larger than the sum of its proper divisors (7134222963).

21320100429 is a wasteful number, since it uses less digits than its factorization.

21320100429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6880707.

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 21320100429 in words is "twenty-one billion, three hundred twenty million, one hundred thousand, four hundred twenty-nine".