22121442332403 has 4 divisors (see below), whose sum is σ = 29495256443208. Its totient is φ = 14747628221600.

The previous prime is 22121442332389. The next prime is 22121442332461. The reversal of 22121442332403 is 30423324412122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22121442332403 - 2⁴ = 22121442332387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121442332503) 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, 3686907055398 + ... + 3686907055403.

It is an arithmetic number, because the mean of its divisors is an integer number (7373814110802).

Almost surely, 2^{22121442332403} is an apocalyptic number.

22121442332403 is a deficient number, since it is larger than the sum of its proper divisors (7373814110805).

22121442332403 is an equidigital number, since it uses as much as digits as its factorization.

22121442332403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7373814110804.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 22121442332403 its reverse (30423324412122), we get a palindrome (52544766744525).

The spelling of 22121442332403 in words is "twenty-two trillion, one hundred twenty-one billion, four hundred forty-two million, three hundred thirty-two thousand, four hundred three".