212121111220103 has 8 divisors (see below), whose sum is σ = 212689175462400. Its totient is φ = 211553163726048.

The previous prime is 212121111220049. The next prime is 212121111220111. The reversal of 212121111220103 is 301022111121212.

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 212121111220103 - 2²² = 212121107025799 is a prime.

It is a super-2 number, since 2×212121111220103² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212121111222103) 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, 25547768 + ... + 32816621.

It is an arithmetic number, because the mean of its divisors is an integer number (26586146932800).

Almost surely, 2^{212121111220103} is an apocalyptic number.

212121111220103 is a deficient number, since it is larger than the sum of its proper divisors (568064242297).

212121111220103 is an equidigital number, since it uses as much as digits as its factorization.

212121111220103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58374121.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 212121111220103 its reverse (301022111121212), we get a palindrome (513143222341315).

The spelling of 212121111220103 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twenty thousand, one hundred three".