212001001011101 has 4 divisors (see below), whose sum is σ = 212003228545692. Its totient is φ = 211998773476512.

The previous prime is 212001001011029. The next prime is 212001001011109. The reversal of 212001001011101 is 101110100100212.

212001001011101 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 can be written as a sum of positive squares in 2 ways, for example, as 185090855136100 + 26910145875001 = 13604810^2 + 5187499^2 .

It is a cyclic number.

It is not a de Polignac number, because 212001001011101 - 2²⁶ = 212000933902237 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 (212001001011109) 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, 1113624530 + ... + 1113814883.

It is an arithmetic number, because the mean of its divisors is an integer number (53000807136423).

Almost surely, 2^{212001001011101} is an apocalyptic number.

It is an amenable number.

212001001011101 is a deficient number, since it is larger than the sum of its proper divisors (2227534591).

212001001011101 is an equidigital number, since it uses as much as digits as its factorization.

212001001011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227534590.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 212001001011101 its reverse (101110100100212), we get a palindrome (313111101111313).

The spelling of 212001001011101 in words is "two hundred twelve trillion, one billion, one million, eleven thousand, one hundred one".