20121210022 has 64 divisors (see below), whose sum is σ = 31960008000. Its totient is φ = 9493217280.

The previous prime is 20121210017. The next prime is 20121210059. The reversal of 20121210022 is 22001212102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20121209984 and 20121210011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78292518 + ... + 78292774.

It is an arithmetic number, because the mean of its divisors is an integer number (499375125).

Almost surely, 2^20121210022 is an apocalyptic number.

20121210022 is a deficient number, since it is larger than the sum of its proper divisors (11838797978).

20121210022 is a wasteful number, since it uses less digits than its factorization.

20121210022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20121210022 its reverse (22001212102), we get a palindrome (42122422124).

The spelling of 20121210022 in words is "twenty billion, one hundred twenty-one million, two hundred ten thousand, twenty-two".