21042314433 has 16 divisors (see below), whose sum is σ = 35627199360. Its totient is φ = 12024179568.

The previous prime is 21042314429. The next prime is 21042314443. The reversal of 21042314433 is 33441324012.

21042314433 is a `hidden beast` number, since 210 + 4 + 2 + 3 + 1 + 443 + 3 = 666.

It is not a de Polignac number, because 21042314433 - 2² = 21042314429 is a prime.

It is a super-2 number, since 2×21042314433² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21042314397 and 21042314406.

It is not an unprimeable number, because it can be changed into a prime (21042314413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55667310 + ... + 55667687.

It is an arithmetic number, because the mean of its divisors is an integer number (2226699960).

Almost surely, 2^21042314433 is an apocalyptic number.

It is an amenable number.

21042314433 is a deficient number, since it is larger than the sum of its proper divisors (14584884927).

21042314433 is a wasteful number, since it uses less digits than its factorization.

21042314433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111335013 (or 111335007 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21042314433 its reverse (33441324012), we get a palindrome (54483638445).

The spelling of 21042314433 in words is "twenty-one billion, forty-two million, three hundred fourteen thousand, four hundred thirty-three".