210102212112121 has 8 divisors (see below), whose sum is σ = 240117536998080. Its totient is φ = 180087068015088.

The previous prime is 210102212112053. The next prime is 210102212112167. The reversal of 210102212112121 is 121211212201012.

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 not a de Polignac number, because 210102212112121 - 2²⁷ = 210102077894393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210102212112421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42697711 + ... + 47363476.

It is an arithmetic number, because the mean of its divisors is an integer number (30014692124760).

Almost surely, 2^{210102212112121} is an apocalyptic number.

It is an amenable number.

210102212112121 is a deficient number, since it is larger than the sum of its proper divisors (30015324885959).

210102212112121 is an equidigital number, since it uses as much as digits as its factorization.

210102212112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90394463.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 210102212112121 its reverse (121211212201012), we get a palindrome (331313424313133).

The spelling of 210102212112121 in words is "two hundred ten trillion, one hundred two billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-one".