12100211001 has 14 divisors (see below), whose sum is σ = 18142018410. Its totient is φ = 8066806848.

The previous prime is 12100210987. The next prime is 12100211021. The reversal of 12100211001 is 10011200121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8991590976 + 3108620025 = 94824^2 + 55755^2 .

It is not a de Polignac number, because 12100211001 - 2¹⁸ = 12099948857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12100211021) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 8298456 + ... + 8299913.

Almost surely, 2^12100211001 is an apocalyptic number.

It is an amenable number.

12100211001 is a deficient number, since it is larger than the sum of its proper divisors (6041807409).

12100211001 is an frugal number, since it uses more digits than its factorization.

12100211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16598387 (or 16598372 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12100211001 its reverse (10011200121), we get a palindrome (22111411122).

The spelling of 12100211001 in words is "twelve billion, one hundred million, two hundred eleven thousand, one".