212110111001 has 8 divisors (see below), whose sum is σ = 224598311784. Its totient is φ = 199623147520.

The previous prime is 212110110983. The next prime is 212110111013. The reversal of 212110111001 is 100111011212.

It can be written as a sum of positive squares in 4 ways, for example, as 96425775625 + 115684335376 = 310525^2 + 340124^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212110111001 - 2¹⁰ = 212110109977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212110111061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55961 + ... + 653721.

It is an arithmetic number, because the mean of its divisors is an integer number (28074788973).

Almost surely, 2^212110111001 is an apocalyptic number.

It is an amenable number.

212110111001 is a deficient number, since it is larger than the sum of its proper divisors (12488200783).

212110111001 is a wasteful number, since it uses less digits than its factorization.

212110111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618651.

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

Adding to 212110111001 its reverse (100111011212), we get a palindrome (312221122213).

The spelling of 212110111001 in words is "two hundred twelve billion, one hundred ten million, one hundred eleven thousand, one".