20012120123122 has 16 divisors (see below), whose sum is σ = 30512122224192. Its totient is φ = 9841432507920.

The previous prime is 20012120123113. The next prime is 20012120123123. The reversal of 20012120123122 is 22132102121002.

It is a self number, because there is not a number n which added to its sum of digits gives 20012120123122.

It is not an unprimeable number, because it can be changed into a prime (20012120123123) 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, 2914318 + ... + 6965449.

It is an arithmetic number, because the mean of its divisors is an integer number (1907007639012).

Almost surely, 2^{20012120123122} is an apocalyptic number.

20012120123122 is a deficient number, since it is larger than the sum of its proper divisors (10500002101070).

20012120123122 is a wasteful number, since it uses less digits than its factorization.

20012120123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9896433.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20012120123122 its reverse (22132102121002), we get a palindrome (42144222244124).

The spelling of 20012120123122 in words is "twenty trillion, twelve billion, one hundred twenty million, one hundred twenty-three thousand, one hundred twenty-two".