202102022221121 has 8 divisors (see below), whose sum is σ = 221617290501984. Its totient is φ = 182777146801920.

The previous prime is 202102022221111. The next prime is 202102022221133. The reversal of 202102022221121 is 121122220201202.

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

It is not a de Polignac number, because 202102022221121 - 2³⁸ = 201827144314177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202102022221093 and 202102022221102.

It is not an unprimeable number, because it can be changed into a prime (202102022221111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47598213191 + ... + 47598217436.

It is an arithmetic number, because the mean of its divisors is an integer number (27702161312748).

Almost surely, 2^{202102022221121} is an apocalyptic number.

It is an amenable number.

202102022221121 is a deficient number, since it is larger than the sum of its proper divisors (19515268280863).

202102022221121 is a wasteful number, since it uses less digits than its factorization.

202102022221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95196430831.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 202102022221121 its reverse (121122220201202), we get a palindrome (323224242422323).

The spelling of 202102022221121 in words is "two hundred two trillion, one hundred two billion, twenty-two million, two hundred twenty-one thousand, one hundred twenty-one".