201121121210011 has 8 divisors (see below), whose sum is σ = 205801156416240. Its totient is φ = 196441213268832.

The previous prime is 201121121209949. The next prime is 201121121210017. The reversal of 201121121210011 is 110012121121102.

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 201121121210011 - 2¹⁷ = 201121121078939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201121121210017) 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, 28615120 + ... + 34943773.

It is an arithmetic number, because the mean of its divisors is an integer number (25725144552030).

Almost surely, 2^{201121121210011} is an apocalyptic number.

201121121210011 is a deficient number, since it is larger than the sum of its proper divisors (4680035206229).

201121121210011 is an equidigital number, since it uses as much as digits as its factorization.

201121121210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63632525.

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

Adding to 201121121210011 its reverse (110012121121102), we get a palindrome (311133242331113).

The spelling of 201121121210011 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred ten thousand, eleven".