211121012201 has 4 divisors (see below), whose sum is σ = 230313831504. Its totient is φ = 191928192900.

The previous prime is 211121012147. The next prime is 211121012273. The reversal of 211121012201 is 102210121112.

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 211121012201 - 2²² = 211116817897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211121014201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9596409635 + ... + 9596409656.

It is an arithmetic number, because the mean of its divisors is an integer number (57578457876).

Almost surely, 2^211121012201 is an apocalyptic number.

It is an amenable number.

211121012201 is a deficient number, since it is larger than the sum of its proper divisors (19192819303).

211121012201 is a wasteful number, since it uses less digits than its factorization.

211121012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19192819302.

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

Adding to 211121012201 its reverse (102210121112), we get a palindrome (313331133313).

The spelling of 211121012201 in words is "two hundred eleven billion, one hundred twenty-one million, twelve thousand, two hundred one".