22001155211449 has 4 divisors (see below), whose sum is σ = 22001534318736. Its totient is φ = 22000776104164.

The previous prime is 22001155211447. The next prime is 22001155211467. The reversal of 22001155211449 is 94411255110022.

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 22001155211449 - 2¹ = 22001155211447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22001155211447) 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, 189466579 + ... + 189582664.

It is an arithmetic number, because the mean of its divisors is an integer number (5500383579684).

Almost surely, 2^{22001155211449} is an apocalyptic number.

It is an amenable number.

22001155211449 is a deficient number, since it is larger than the sum of its proper divisors (379107287).

22001155211449 is an equidigital number, since it uses as much as digits as its factorization.

22001155211449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379107286.

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 22001155211449 in words is "twenty-two trillion, one billion, one hundred fifty-five million, two hundred eleven thousand, four hundred forty-nine".