10212121103 has 8 divisors (see below), whose sum is σ = 10673176080. Its totient is φ = 9758327040.

The previous prime is 10212121057. The next prime is 10212121111. The reversal of 10212121103 is 30112121201.

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 10212121103 - 2²⁰ = 10211072527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212121123) 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, 1812353 + ... + 1817978.

It is an arithmetic number, because the mean of its divisors is an integer number (1334147010).

Almost surely, 2^10212121103 is an apocalyptic number.

10212121103 is a deficient number, since it is larger than the sum of its proper divisors (461054977).

10212121103 is an equidigital number, since it uses as much as digits as its factorization.

10212121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630457.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10212121103 its reverse (30112121201), we get a palindrome (40324242304).

The spelling of 10212121103 in words is "ten billion, two hundred twelve million, one hundred twenty-one thousand, one hundred three".