22515021005451 has 32 divisors (see below), whose sum is σ = 32341323366912. Its totient is φ = 13850229173760.

The previous prime is 22515021005437. The next prime is 22515021005471. The reversal of 22515021005451 is 15450012051522.

It is not a de Polignac number, because 22515021005451 - 2⁵ = 22515021005419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22515021005471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1836006346 + ... + 1836018608.

It is an arithmetic number, because the mean of its divisors is an integer number (1010666355216).

Almost surely, 2^{22515021005451} is an apocalyptic number.

22515021005451 is a deficient number, since it is larger than the sum of its proper divisors (9826302361461).

22515021005451 is a wasteful number, since it uses less digits than its factorization.

22515021005451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26003.

The product of its (nonzero) digits is 20000, while the sum is 33.

Adding to 22515021005451 its reverse (15450012051522), we get a palindrome (37965033056973).

The spelling of 22515021005451 in words is "twenty-two trillion, five hundred fifteen billion, twenty-one million, five thousand, four hundred fifty-one".