211102121201 has 4 divisors (see below), whose sum is σ = 211103108004. Its totient is φ = 211101134400.

The previous prime is 211102121129. The next prime is 211102121203. The reversal of 211102121201 is 102121201112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 132856605025 + 78245516176 = 364495^2 + 279724^2 .

It is a cyclic number.

It is not a de Polignac number, because 211102121201 - 2¹⁸ = 211101859057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211102121203) 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, 23060 + ... + 650181.

It is an arithmetic number, because the mean of its divisors is an integer number (52775777001).

Almost surely, 2^211102121201 is an apocalyptic number.

It is an amenable number.

211102121201 is a deficient number, since it is larger than the sum of its proper divisors (986803).

211102121201 is an equidigital number, since it uses as much as digits as its factorization.

211102121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986802.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211102121201 its reverse (102121201112), we get a palindrome (313223322313).

The spelling of 211102121201 in words is "two hundred eleven billion, one hundred two million, one hundred twenty-one thousand, two hundred one".