21422207403 has 32 divisors (see below), whose sum is σ = 33169550400. Its totient is φ = 13646803968.

The previous prime is 21422207377. The next prime is 21422207447. The reversal of 21422207403 is 30470222412.

21422207403 is a `hidden beast` number, since 214 + 22 + 20 + 7 + 403 = 666.

It is not a de Polignac number, because 21422207403 - 2¹² = 21422203307 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (21422207003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65076 + ... + 216977.

It is an arithmetic number, because the mean of its divisors is an integer number (1036548450).

Almost surely, 2^21422207403 is an apocalyptic number.

21422207403 is a deficient number, since it is larger than the sum of its proper divisors (11747342997).

21422207403 is a wasteful number, since it uses less digits than its factorization.

21422207403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282188 (or 282182 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

Adding to 21422207403 its reverse (30470222412), we get a palindrome (51892429815).

The spelling of 21422207403 in words is "twenty-one billion, four hundred twenty-two million, two hundred seven thousand, four hundred three".