20123022451 has 8 divisors (see below), whose sum is σ = 24350548320. Its totient is φ = 16233698688.

The previous prime is 20123022431. The next prime is 20123022463. The reversal of 20123022451 is 15422032102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20123022451 - 2⁵ = 20123022419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20123022431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84550396 + ... + 84550633.

It is an arithmetic number, because the mean of its divisors is an integer number (3043818540).

Almost surely, 2^20123022451 is an apocalyptic number.

20123022451 is a deficient number, since it is larger than the sum of its proper divisors (4227525869).

20123022451 is a wasteful number, since it uses less digits than its factorization.

20123022451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169101053.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20123022451 its reverse (15422032102), we get a palindrome (35545054553).

The spelling of 20123022451 in words is "twenty billion, one hundred twenty-three million, twenty-two thousand, four hundred fifty-one".