202102222102121 has 8 divisors (see below), whose sum is σ = 222658073676288. Its totient is φ = 181910190910000.

The previous prime is 202102222102093. The next prime is 202102222102229. The reversal of 202102222102121 is 121201222201202.

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-202102222102121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202102222102093 and 202102222102102.

It is not an unprimeable number, because it can be changed into a prime (202102222152121) 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, 90955094345 + ... + 90955096566.

It is an arithmetic number, because the mean of its divisors is an integer number (27832259209536).

Almost surely, 2^{202102222102121} is an apocalyptic number.

It is an amenable number.

202102222102121 is a deficient number, since it is larger than the sum of its proper divisors (20555851574167).

202102222102121 is a wasteful number, since it uses less digits than its factorization.

202102222102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181910191023.

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

Adding to 202102222102121 its reverse (121201222201202), we get a palindrome (323303444303323).

The spelling of 202102222102121 in words is "two hundred two trillion, one hundred two billion, two hundred twenty-two million, one hundred two thousand, one hundred twenty-one".