21113022333455 has 16 divisors (see below), whose sum is σ = 27363150942624. Its totient is φ = 15546223655040.

The previous prime is 21113022333367. The next prime is 21113022333527. The reversal of 21113022333455 is 55433322031112.

It is not a de Polignac number, because 21113022333455 - 2⁸ = 21113022333199 is a prime.

It is a super-2 number, since 2×21113022333455² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 468011636 + ... + 468056745.

It is an arithmetic number, because the mean of its divisors is an integer number (1710196933914).

Almost surely, 2^{21113022333455} is an apocalyptic number.

21113022333455 is a deficient number, since it is larger than the sum of its proper divisors (6250128609169).

21113022333455 is a wasteful number, since it uses less digits than its factorization.

21113022333455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936068746.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 21113022333455 its reverse (55433322031112), we get a palindrome (76546344364567).

The spelling of 21113022333455 in words is "twenty-one trillion, one hundred thirteen billion, twenty-two million, three hundred thirty-three thousand, four hundred fifty-five".