210022011202121 has 4 divisors (see below), whose sum is σ = 210107420725200. Its totient is φ = 209936601679044.

The previous prime is 210022011202117. The next prime is 210022011202259. The reversal of 210022011202121 is 121202110220012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210022011202121 - 2² = 210022011202117 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 210022011202121.

It is not an unprimeable number, because it can be changed into a prime (210022011262121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42704757851 + ... + 42704762768.

It is an arithmetic number, because the mean of its divisors is an integer number (52526855181300).

Almost surely, 2^{210022011202121} is an apocalyptic number.

It is an amenable number.

210022011202121 is a deficient number, since it is larger than the sum of its proper divisors (85409523079).

210022011202121 is an equidigital number, since it uses as much as digits as its factorization.

210022011202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85409523078.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210022011202121 its reverse (121202110220012), we get a palindrome (331224121422133).

The spelling of 210022011202121 in words is "two hundred ten trillion, twenty-two billion, eleven million, two hundred two thousand, one hundred twenty-one".