212012100101 has 4 divisors (see below), whose sum is σ = 215176459872. Its totient is φ = 208847740332.

The previous prime is 212012100067. The next prime is 212012100103. The reversal of 212012100101 is 101001210212.

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 212012100101 - 2⁶ = 212012100037 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 (212012100103) 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, 1582179785 + ... + 1582179918.

It is an arithmetic number, because the mean of its divisors is an integer number (53794114968).

Almost surely, 2^212012100101 is an apocalyptic number.

It is an amenable number.

212012100101 is a deficient number, since it is larger than the sum of its proper divisors (3164359771).

212012100101 is an equidigital number, since it uses as much as digits as its factorization.

212012100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164359770.

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

Adding to 212012100101 its reverse (101001210212), we get a palindrome (313013310313).

The spelling of 212012100101 in words is "two hundred twelve billion, twelve million, one hundred thousand, one hundred one".