22145212401 has 16 divisors (see below), whose sum is σ = 33668740224. Its totient is φ = 12826185984.

The previous prime is 22145212393. The next prime is 22145212417. The reversal of 22145212401 is 10421254122.

It is not a de Polignac number, because 22145212401 - 2³ = 22145212393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22145212501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16700101 + ... + 16701426.

It is an arithmetic number, because the mean of its divisors is an integer number (2104296264).

Almost surely, 2^22145212401 is an apocalyptic number.

It is an amenable number.

22145212401 is a deficient number, since it is larger than the sum of its proper divisors (11523527823).

22145212401 is a wasteful number, since it uses less digits than its factorization.

22145212401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33401560.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 22145212401 its reverse (10421254122), we get a palindrome (32566466523).

The spelling of 22145212401 in words is "twenty-two billion, one hundred forty-five million, two hundred twelve thousand, four hundred one".