212010011221111 has 4 divisors (see below), whose sum is σ = 213194424691800. Its totient is φ = 210825597750424.

The previous prime is 212010011221093. The next prime is 212010011221139. The reversal of 212010011221111 is 111122110010212.

212010011221111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212010011221111 - 2⁵ = 212010011221079 is a prime.

It is a super-2 number, since 2×212010011221111² (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 (212010011228111) 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, 592206735076 + ... + 592206735433.

It is an arithmetic number, because the mean of its divisors is an integer number (53298606172950).

Almost surely, 2^{212010011221111} is an apocalyptic number.

212010011221111 is a deficient number, since it is larger than the sum of its proper divisors (1184413470689).

212010011221111 is a wasteful number, since it uses less digits than its factorization.

212010011221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184413470688.

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

Adding to 212010011221111 its reverse (111122110010212), we get a palindrome (323132121231323).

The spelling of 212010011221111 in words is "two hundred twelve trillion, ten billion, eleven million, two hundred twenty-one thousand, one hundred eleven".