212011102120101 has 4 divisors (see below), whose sum is σ = 282681469493472. Its totient is φ = 141340734746732.

The previous prime is 212011102120093. The next prime is 212011102120151. The reversal of 212011102120101 is 101021201110212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212011102120101 - 2³ = 212011102120093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011102120151) 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, 35335183686681 + ... + 35335183686686.

It is an arithmetic number, because the mean of its divisors is an integer number (70670367373368).

Almost surely, 2^{212011102120101} is an apocalyptic number.

It is an amenable number.

212011102120101 is a deficient number, since it is larger than the sum of its proper divisors (70670367373371).

212011102120101 is an equidigital number, since it uses as much as digits as its factorization.

212011102120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70670367373370.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212011102120101 its reverse (101021201110212), we get a palindrome (313032303230313).

The spelling of 212011102120101 in words is "two hundred twelve trillion, eleven billion, one hundred two million, one hundred twenty thousand, one hundred one".