20123222115 has 16 divisors (see below), whose sum is σ = 32199003648. Its totient is φ = 10731769056.

The previous prime is 20123222113. The next prime is 20123222143. The reversal of 20123222115 is 51122232102.

It is not a de Polignac number, because 20123222115 - 2¹ = 20123222113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20123222091 and 20123222100.

It is not an unprimeable number, because it can be changed into a prime (20123222111) 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, 374214 + ... + 424596.

It is an arithmetic number, because the mean of its divisors is an integer number (2012437728).

Almost surely, 2^20123222115 is an apocalyptic number.

20123222115 is a deficient number, since it is larger than the sum of its proper divisors (12075781533).

20123222115 is a wasteful number, since it uses less digits than its factorization.

20123222115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77018.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 20123222115 its reverse (51122232102), we get a palindrome (71245454217).

The spelling of 20123222115 in words is "twenty billion, one hundred twenty-three million, two hundred twenty-two thousand, one hundred fifteen".