10212212121 has 8 divisors (see below), whose sum is σ = 13984290624. Its totient is φ = 6624137520.

The previous prime is 10212212099. The next prime is 10212212161. The reversal of 10212212121 is 12121221201.

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

It is not a de Polignac number, because 10212212121 - 2⁶ = 10212212057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10212212121.

It is not an unprimeable number, because it can be changed into a prime (10212212161) 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, 46000845 + ... + 46001066.

It is an arithmetic number, because the mean of its divisors is an integer number (1748036328).

Almost surely, 2^10212212121 is an apocalyptic number.

It is an amenable number.

10212212121 is a deficient number, since it is larger than the sum of its proper divisors (3772078503).

10212212121 is an equidigital number, since it uses as much as digits as its factorization.

10212212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92001951.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10212212121 its reverse (12121221201), we get a palindrome (22333433322).

The spelling of 10212212121 in words is "ten billion, two hundred twelve million, two hundred twelve thousand, one hundred twenty-one".