22145211452 has 48 divisors (see below), whose sum is σ = 48040634880. Its totient is φ = 8697696192.

The previous prime is 22145211427. The next prime is 22145211457. The reversal of 22145211452 is 25411254122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22145211457) 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, 168248 + ... + 269439.

It is an arithmetic number, because the mean of its divisors is an integer number (1000846560).

Almost surely, 2^22145211452 is an apocalyptic number.

It is an amenable number.

22145211452 is an abundant number, since it is smaller than the sum of its proper divisors (25895423428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22145211452 is a wasteful number, since it uses less digits than its factorization.

22145211452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437850 (or 437848 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

Adding to 22145211452 its reverse (25411254122), we get a palindrome (47556465574).

The spelling of 22145211452 in words is "twenty-two billion, one hundred forty-five million, two hundred eleven thousand, four hundred fifty-two".