20012322123 has 24 divisors (see below), whose sum is σ = 30620161728. Its totient is φ = 12551384832.

The previous prime is 20012322101. The next prime is 20012322151. The reversal of 20012322123 is 32122321002.

It is not a de Polignac number, because 20012322123 - 2⁵ = 20012322091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20012322096 and 20012322105.

It is not an unprimeable number, because it can be changed into a prime (20012322193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347665 + ... + 401117.

It is an arithmetic number, because the mean of its divisors is an integer number (1275840072).

Almost surely, 2^20012322123 is an apocalyptic number.

20012322123 is a deficient number, since it is larger than the sum of its proper divisors (10607839605).

20012322123 is a wasteful number, since it uses less digits than its factorization.

20012322123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55923 (or 55920 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20012322123 its reverse (32122321002), we get a palindrome (52134643125).

The spelling of 20012322123 in words is "twenty billion, twelve million, three hundred twenty-two thousand, one hundred twenty-three".