20120021202122 has 16 divisors (see below), whose sum is σ = 31077994719744. Its totient is φ = 9763258908000.

The previous prime is 20120021202103. The next prime is 20120021202161. The reversal of 20120021202122 is 22120212002102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20120021202122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642304004 + ... + 642335327.

It is an arithmetic number, because the mean of its divisors is an integer number (1942374669984).

Almost surely, 2^{20120021202122} is an apocalyptic number.

20120021202122 is a deficient number, since it is larger than the sum of its proper divisors (10957973517622).

20120021202122 is a wasteful number, since it uses less digits than its factorization.

20120021202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284639565.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20120021202122 its reverse (22120212002102), we get a palindrome (42240233204224).

The spelling of 20120021202122 in words is "twenty trillion, one hundred twenty billion, twenty-one million, two hundred two thousand, one hundred twenty-two".