22121330204401 has 4 divisors (see below), whose sum is σ = 22129324905472. Its totient is φ = 22113335503332.

The previous prime is 22121330204341. The next prime is 22121330204437. The reversal of 22121330204401 is 10440203312122.

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 22121330204401 - 2¹¹ = 22121330202353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121330204471) 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, 3997346385 + ... + 3997351918.

It is an arithmetic number, because the mean of its divisors is an integer number (5532331226368).

Almost surely, 2^{22121330204401} is an apocalyptic number.

It is an amenable number.

22121330204401 is a deficient number, since it is larger than the sum of its proper divisors (7994701071).

22121330204401 is an equidigital number, since it uses as much as digits as its factorization.

22121330204401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7994701070.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 22121330204401 its reverse (10440203312122), we get a palindrome (32561533516523).

The spelling of 22121330204401 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred thirty million, two hundred four thousand, four hundred one".