212120011101 has 16 divisors (see below), whose sum is σ = 291600921024. Its totient is φ = 137055965184.

The previous prime is 212120011039. The next prime is 212120011111. The reversal of 212120011101 is 101110021212.

It is not a de Polignac number, because 212120011101 - 2⁹ = 212120010589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120011111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3689355 + ... + 3746408.

It is an arithmetic number, because the mean of its divisors is an integer number (18225057564).

Almost surely, 2^212120011101 is an apocalyptic number.

It is an amenable number.

212120011101 is a deficient number, since it is larger than the sum of its proper divisors (79480909923).

212120011101 is a wasteful number, since it uses less digits than its factorization.

212120011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7436060.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 212120011101 its reverse (101110021212), we get a palindrome (313230032313).

The spelling of 212120011101 in words is "two hundred twelve billion, one hundred twenty million, eleven thousand, one hundred one".