22221545401 has 16 divisors (see below), whose sum is σ = 24706440000. Its totient is φ = 19817784000.

The previous prime is 22221545383. The next prime is 22221545441. The reversal of 22221545401 is 10454512222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22221545401 - 2⁹ = 22221544889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22221545401.

It is not an unprimeable number, because it can be changed into a prime (22221545441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29350 + ... + 212848.

It is an arithmetic number, because the mean of its divisors is an integer number (1544152500).

Almost surely, 2^22221545401 is an apocalyptic number.

It is an amenable number.

22221545401 is a deficient number, since it is larger than the sum of its proper divisors (2484894599).

22221545401 is a wasteful number, since it uses less digits than its factorization.

22221545401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183720.

The product of its (nonzero) digits is 6400, while the sum is 28.

The spelling of 22221545401 in words is "twenty-two billion, two hundred twenty-one million, five hundred forty-five thousand, four hundred one".