20121212122 has 32 divisors (see below), whose sum is σ = 33574829184. Its totient is φ = 8967432000.

The previous prime is 20121212117. The next prime is 20121212171. The reversal of 20121212122 is 22121212102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20121212096 and 20121212105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184908 + ... + 272824.

It is an arithmetic number, because the mean of its divisors is an integer number (1049213412).

Almost surely, 2^20121212122 is an apocalyptic number.

20121212122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20121212122 is a deficient number, since it is larger than the sum of its proper divisors (13453617062).

20121212122 is a wasteful number, since it uses less digits than its factorization.

20121212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88134.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20121212122 its reverse (22121212102), we get a palindrome (42242424224).

The spelling of 20121212122 in words is "twenty billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty-two".