212001000120101 has 4 divisors (see below), whose sum is σ = 212099467841772. Its totient is φ = 211902532398432.

The previous prime is 212001000120073. The next prime is 212001000120109. The reversal of 212001000120101 is 101021000100212.

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 17552756539201 + 194448243580900 = 4189601^2 + 13944470^2 .

It is a cyclic number.

It is not a de Polignac number, because 212001000120101 - 2²⁶ = 212000933011237 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 (212001000120109) 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, 49233857606 + ... + 49233861911.

It is an arithmetic number, because the mean of its divisors is an integer number (53024866960443).

Almost surely, 2^{212001000120101} is an apocalyptic number.

It is an amenable number.

212001000120101 is a deficient number, since it is larger than the sum of its proper divisors (98467721671).

212001000120101 is an equidigital number, since it uses as much as digits as its factorization.

212001000120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98467721670.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212001000120101 its reverse (101021000100212), we get a palindrome (313022000220313).

The spelling of 212001000120101 in words is "two hundred twelve trillion, one billion, one hundred twenty thousand, one hundred one".