202022122121 has 8 divisors (see below), whose sum is σ = 210869058624. Its totient is φ = 193180466160.

The previous prime is 202022122103. The next prime is 202022122139. The reversal of 202022122121 is 121221220202.

It is a happy number.

202022122121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (202022122103) and next prime (202022122139).

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-202022122121 is a prime.

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 202022122121.

It is not an unprimeable number, because it can be changed into a prime (202022122151) 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, 1241846 + ... + 1395071.

It is an arithmetic number, because the mean of its divisors is an integer number (26358632328).

Almost surely, 2^202022122121 is an apocalyptic number.

It is an amenable number.

202022122121 is a deficient number, since it is larger than the sum of its proper divisors (8846936503).

202022122121 is a wasteful number, since it uses less digits than its factorization.

202022122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640271.

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

Adding to 202022122121 its reverse (121221220202), we get a palindrome (323243342323).

The spelling of 202022122121 in words is "two hundred two billion, twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".