212111001101 has 4 divisors (see below), whose sum is σ = 213781166592. Its totient is φ = 210440835612.

The previous prime is 212111001073. The next prime is 212111001127. The reversal of 212111001101 is 101100111212.

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 212111001101 - 2¹⁴ = 212110984717 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 (212111001131) 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, 835082555 + ... + 835082808.

It is an arithmetic number, because the mean of its divisors is an integer number (53445291648).

Almost surely, 2^212111001101 is an apocalyptic number.

It is an amenable number.

212111001101 is a deficient number, since it is larger than the sum of its proper divisors (1670165491).

212111001101 is a wasteful number, since it uses less digits than its factorization.

212111001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670165490.

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

Adding to 212111001101 its reverse (101100111212), we get a palindrome (313211112313).

The spelling of 212111001101 in words is "two hundred twelve billion, one hundred eleven million, one thousand, one hundred one".