311202202121 has 8 divisors (see below), whose sum is σ = 324739355904. Its totient is φ = 297665600320.

The previous prime is 311202202117. The next prime is 311202202169. The reversal of 311202202121 is 121202202113.

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 311202202121 - 2² = 311202202117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311202202121.

It is not an unprimeable number, because it can be changed into a prime (311202202721) 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, 1360400 + ... + 1572606.

It is an arithmetic number, because the mean of its divisors is an integer number (40592419488).

Almost surely, 2^311202202121 is an apocalyptic number.

It is an amenable number.

311202202121 is a deficient number, since it is larger than the sum of its proper divisors (13537153783).

311202202121 is a wasteful number, since it uses less digits than its factorization.

311202202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275991.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 311202202121 its reverse (121202202113), we get a palindrome (432404404234).

The spelling of 311202202121 in words is "three hundred eleven billion, two hundred two million, two hundred two thousand, one hundred twenty-one".