212103020011 has 4 divisors (see below), whose sum is σ = 216615850272. Its totient is φ = 207590189752.

The previous prime is 212103019991. The next prime is 212103020021. The reversal of 212103020011 is 110020301212.

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 212103020011 - 2¹⁷ = 212102888939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212103019973 and 212103020000.

It is not an unprimeable number, because it can be changed into a prime (212103020021) 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, 2256415060 + ... + 2256415153.

It is an arithmetic number, because the mean of its divisors is an integer number (54153962568).

Almost surely, 2^212103020011 is an apocalyptic number.

212103020011 is a deficient number, since it is larger than the sum of its proper divisors (4512830261).

212103020011 is an equidigital number, since it uses as much as digits as its factorization.

212103020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512830260.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 212103020011 its reverse (110020301212), we get a palindrome (322123321223).

The spelling of 212103020011 in words is "two hundred twelve billion, one hundred three million, twenty thousand, eleven".