22151225503453 has 4 divisors (see below), whose sum is σ = 23454238768380. Its totient is φ = 20848212238528.

The previous prime is 22151225503411. The next prime is 22151225503507. The reversal of 22151225503453 is 35430552215122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11426144146564 + 10725081356889 = 3380258^2 + 3274917^2 .

It is a cyclic number.

It is not a de Polignac number, because 22151225503453 - 2³³ = 22142635568861 is a prime.

It is a super-2 number, since 2×22151225503453² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22151225503153) 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, 651506632438 + ... + 651506632471.

It is an arithmetic number, because the mean of its divisors is an integer number (5863559692095).

Almost surely, 2^{22151225503453} is an apocalyptic number.

It is an amenable number.

22151225503453 is a deficient number, since it is larger than the sum of its proper divisors (1303013264927).

22151225503453 is a wasteful number, since it uses less digits than its factorization.

22151225503453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303013264926.

The product of its (nonzero) digits is 360000, while the sum is 40.

Adding to 22151225503453 its reverse (35430552215122), we get a palindrome (57581777718575).

The spelling of 22151225503453 in words is "twenty-two trillion, one hundred fifty-one billion, two hundred twenty-five million, five hundred three thousand, four hundred fifty-three".