20451432122 has 16 divisors (see below), whose sum is σ = 33497859744. Its totient is φ = 9287250000.

The previous prime is 20451432121. The next prime is 20451432181. The reversal of 20451432122 is 22123415402.

It is a super-2 number, since 2×20451432122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20451432091 and 20451432100.

It is not an unprimeable number, because it can be changed into a prime (20451432121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 419129 + ... + 465372.

It is an arithmetic number, because the mean of its divisors is an integer number (2093616234).

Almost surely, 2^20451432122 is an apocalyptic number.

20451432122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20451432122 is a deficient number, since it is larger than the sum of its proper divisors (13046427622).

20451432122 is a wasteful number, since it uses less digits than its factorization.

20451432122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885565.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 20451432122 its reverse (22123415402), we get a palindrome (42574847524).

The spelling of 20451432122 in words is "twenty billion, four hundred fifty-one million, four hundred thirty-two thousand, one hundred twenty-two".