20102202022121 has 8 divisors (see below), whose sum is σ = 20130729563520. Its totient is φ = 20073676062672.

The previous prime is 20102202022109. The next prime is 20102202022153. The reversal of 20102202022121 is 12122020220102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102202022121 is a prime.

It is a super-2 number, since 2×20102202022121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20102202022121.

It is not an unprimeable number, because it can be changed into a prime (20102202022921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26314871 + ... + 27068003.

It is an arithmetic number, because the mean of its divisors is an integer number (2516341195440).

Almost surely, 2^{20102202022121} is an apocalyptic number.

It is an amenable number.

20102202022121 is a deficient number, since it is larger than the sum of its proper divisors (28527541399).

20102202022121 is an equidigital number, since it uses as much as digits as its factorization.

20102202022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790975.

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

Adding to 20102202022121 its reverse (12122020220102), we get a palindrome (32224222242223).

The spelling of 20102202022121 in words is "twenty trillion, one hundred two billion, two hundred two million, twenty-two thousand, one hundred twenty-one".