212001111021103 has 4 divisors (see below), whose sum is σ = 223159064232760. Its totient is φ = 200843157809448.

The previous prime is 212001111021083. The next prime is 212001111021107. The reversal of 212001111021103 is 301120111100212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212001111021103 - 2⁵ = 212001111021071 is a prime.

It is a super-2 number, since 2×212001111021103² (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 (212001111021107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5578976605800 + ... + 5578976605837.

It is an arithmetic number, because the mean of its divisors is an integer number (55789766058190).

Almost surely, 2^{212001111021103} is an apocalyptic number.

212001111021103 is a deficient number, since it is larger than the sum of its proper divisors (11157953211657).

212001111021103 is a wasteful number, since it uses less digits than its factorization.

212001111021103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11157953211656.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 212001111021103 its reverse (301120111100212), we get a palindrome (513121222121315).

The spelling of 212001111021103 in words is "two hundred twelve trillion, one billion, one hundred eleven million, twenty-one thousand, one hundred three".