212010100111 has 4 divisors (see below), whose sum is σ = 212017488592. Its totient is φ = 212002711632.

The previous prime is 212010100067. The next prime is 212010100117. The reversal of 212010100111 is 111001010212.

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 212010100111 - 2²¹ = 212008002959 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 (212010100117) 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, 3651030 + ... + 3708643.

It is an arithmetic number, because the mean of its divisors is an integer number (53004372148).

Almost surely, 2^212010100111 is an apocalyptic number.

212010100111 is a deficient number, since it is larger than the sum of its proper divisors (7388481).

212010100111 is an equidigital number, since it uses as much as digits as its factorization.

212010100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7388480.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 212010100111 its reverse (111001010212), we get a palindrome (323011110323).

The spelling of 212010100111 in words is "two hundred twelve billion, ten million, one hundred thousand, one hundred eleven".