21022314433 has 4 divisors (see below), whose sum is σ = 21936328128. Its totient is φ = 20108300740.

The previous prime is 21022314431. The next prime is 21022314449. The reversal of 21022314433 is 33441322012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21022314433 - 2¹ = 21022314431 is a prime.

It is a super-2 number, since 2×21022314433² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21022314398 and 21022314407.

It is not an unprimeable number, because it can be changed into a prime (21022314431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457006813 + ... + 457006858.

It is an arithmetic number, because the mean of its divisors is an integer number (5484082032).

Almost surely, 2^21022314433 is an apocalyptic number.

21022314433 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21022314433 is a deficient number, since it is larger than the sum of its proper divisors (914013695).

21022314433 is an equidigital number, since it uses as much as digits as its factorization.

21022314433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914013694.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21022314433 its reverse (33441322012), we get a palindrome (54463636445).

The spelling of 21022314433 in words is "twenty-one billion, twenty-two million, three hundred fourteen thousand, four hundred thirty-three".