201202121111 has 8 divisors (see below), whose sum is σ = 204743963520. Its totient is φ = 197676126648.

The previous prime is 201202121101. The next prime is 201202121119. The reversal of 201202121111 is 111121202102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201202121111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201202121119) 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, 3936371 + ... + 3987156.

It is an arithmetic number, because the mean of its divisors is an integer number (25592995440).

Almost surely, 2^201202121111 is an apocalyptic number.

201202121111 is a deficient number, since it is larger than the sum of its proper divisors (3541842409).

201202121111 is an equidigital number, since it uses as much as digits as its factorization.

201202121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7923973.

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

Adding to 201202121111 its reverse (111121202102), we get a palindrome (312323323213).

The spelling of 201202121111 in words is "two hundred one billion, two hundred two million, one hundred twenty-one thousand, one hundred eleven".