211001001201 has 6 divisors (see below), whose sum is σ = 304779223970. Its totient is φ = 140667334128.

The previous prime is 211001001199. The next prime is 211001001229. The reversal of 211001001201 is 102100100112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 210405690000 + 595311201 = 458700^2 + 24399^2 .

It is not a de Polignac number, because 211001001201 - 2¹ = 211001001199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 23444555689 = 211001001201 / (2 + 1 + 1 + 0 + 0 + 1 + 0 + 0 + 1 + 2 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211001001301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11722277836 + ... + 11722277853.

Almost surely, 2^211001001201 is an apocalyptic number.

It is an amenable number.

211001001201 is a deficient number, since it is larger than the sum of its proper divisors (93778222769).

211001001201 is a wasteful number, since it uses less digits than its factorization.

211001001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23444555695 (or 23444555692 counting only the distinct ones).

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

Adding to 211001001201 its reverse (102100100112), we get a palindrome (313101101313).

The spelling of 211001001201 in words is "two hundred eleven billion, one million, one thousand, two hundred one".