22501212455 has 16 divisors (see below), whose sum is σ = 28181200320. Its totient is φ = 17214793728.

The previous prime is 22501212407. The next prime is 22501212463. The reversal of 22501212455 is 55421210522.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22501212455 - 2¹⁴ = 22501196071 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637511 + ... + 671879.

It is an arithmetic number, because the mean of its divisors is an integer number (1761325020).

Almost surely, 2^22501212455 is an apocalyptic number.

22501212455 is a deficient number, since it is larger than the sum of its proper divisors (5679987865).

22501212455 is a wasteful number, since it uses less digits than its factorization.

22501212455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40090.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 22501212455 its reverse (55421210522), we get a palindrome (77922422977).

The spelling of 22501212455 in words is "twenty-two billion, five hundred one million, two hundred twelve thousand, four hundred fifty-five".