20112451222 has 64 divisors (see below), whose sum is σ = 32909976000. Its totient is φ = 9184215040.

The previous prime is 20112451153. The next prime is 20112451243. The reversal of 20112451222 is 22215421102.

It is a junction number, because it is equal to n+sod(n) for n = 20112451193 and 20112451202.

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 31 ways as a sum of consecutive naturals, for example, 44793654 + ... + 44794102.

It is an arithmetic number, because the mean of its divisors is an integer number (514218375).

Almost surely, 2^20112451222 is an apocalyptic number.

20112451222 is a deficient number, since it is larger than the sum of its proper divisors (12797524778).

20112451222 is a wasteful number, since it uses less digits than its factorization.

20112451222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 20112451222 its reverse (22215421102), we get a palindrome (42327872324).

The spelling of 20112451222 in words is "twenty billion, one hundred twelve million, four hundred fifty-one thousand, two hundred twenty-two".