201121202011 has 8 divisors (see below), whose sum is σ = 206120041344. Its totient is φ = 196126812480.

The previous prime is 201121201993. The next prime is 201121202039. The reversal of 201121202011 is 110202121102.

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 201121202011 - 2²¹ = 201119104859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201121201982 and 201121202000.

It is not an unprimeable number, because it can be changed into a prime (201121202081) 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, 1020840 + ... + 1201813.

It is an arithmetic number, because the mean of its divisors is an integer number (25765005168).

Almost surely, 2^201121202011 is an apocalyptic number.

201121202011 is a deficient number, since it is larger than the sum of its proper divisors (4998839333).

201121202011 is a wasteful number, since it uses less digits than its factorization.

201121202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224901.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201121202011 its reverse (110202121102), we get a palindrome (311323323113).

The spelling of 201121202011 in words is "two hundred one billion, one hundred twenty-one million, two hundred two thousand, eleven".