22155420452 has 12 divisors (see below), whose sum is σ = 42296711856. Its totient is φ = 10070645640.

The previous prime is 22155420437. The next prime is 22155420467. The reversal of 22155420452 is 25402455122.

It is an interprime number because it is at equal distance from previous prime (22155420437) and next prime (22155420467).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251766098 + ... + 251766185.

It is an arithmetic number, because the mean of its divisors is an integer number (3524725988).

Almost surely, 2^22155420452 is an apocalyptic number.

22155420452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22155420452 is a deficient number, since it is larger than the sum of its proper divisors (20141291404).

22155420452 is a wasteful number, since it uses less digits than its factorization.

22155420452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503532298 (or 503532296 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

Adding to 22155420452 its reverse (25402455122), we get a palindrome (47557875574).

The spelling of 22155420452 in words is "twenty-two billion, one hundred fifty-five million, four hundred twenty thousand, four hundred fifty-two".