22121000013403 has 4 divisors (see below), whose sum is σ = 22495932217080. Its totient is φ = 21746067809728.

The previous prime is 22121000013401. The next prime is 22121000013479. The reversal of 22121000013403 is 30431000012122.

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 22121000013403 - 2¹ = 22121000013401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121000013401) 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, 187466101750 + ... + 187466101867.

It is an arithmetic number, because the mean of its divisors is an integer number (5623983054270).

Almost surely, 2^{22121000013403} is an apocalyptic number.

22121000013403 is a deficient number, since it is larger than the sum of its proper divisors (374932203677).

22121000013403 is an equidigital number, since it uses as much as digits as its factorization.

22121000013403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374932203676.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22121000013403 its reverse (30431000012122), we get a palindrome (52552000025525).

The spelling of 22121000013403 in words is "twenty-two trillion, one hundred twenty-one billion, thirteen thousand, four hundred three".