20122012123 has 16 divisors (see below), whose sum is σ = 21271461120. Its totient is φ = 19007491104.

The previous prime is 20122012121. The next prime is 20122012133. The reversal of 20122012123 is 32121022102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20122012123 - 2¹ = 20122012121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20122012097 and 20122012106.

It is not an unprimeable number, because it can be changed into a prime (20122012121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207340 + ... + 288502.

It is an arithmetic number, because the mean of its divisors is an integer number (1329466320).

Almost surely, 2^20122012123 is an apocalyptic number.

20122012123 is a deficient number, since it is larger than the sum of its proper divisors (1149448997).

20122012123 is a wasteful number, since it uses less digits than its factorization.

20122012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81378.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20122012123 its reverse (32121022102), we get a palindrome (52243034225).

The spelling of 20122012123 in words is "twenty billion, one hundred twenty-two million, twelve thousand, one hundred twenty-three".