212220102121 has 8 divisors (see below), whose sum is σ = 223979007200. Its totient is φ = 200520139680.

The previous prime is 212220102079. The next prime is 212220102161. The reversal of 212220102121 is 121201022212.

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 212220102121 - 2⁹ = 212220101609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212220102095 and 212220102104.

It is not an unprimeable number, because it can be changed into a prime (212220102161) 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, 14728260 + ... + 14742661.

It is an arithmetic number, because the mean of its divisors is an integer number (27997375900).

Almost surely, 2^212220102121 is an apocalyptic number.

It is an amenable number.

212220102121 is a deficient number, since it is larger than the sum of its proper divisors (11758905079).

212220102121 is a wasteful number, since it uses less digits than its factorization.

212220102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29471319.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212220102121 its reverse (121201022212), we get a palindrome (333421124333).

The spelling of 212220102121 in words is "two hundred twelve billion, two hundred twenty million, one hundred two thousand, one hundred twenty-one".