311201121202 has 16 divisors (see below), whose sum is σ = 494383741272. Its totient is φ = 146411101440.

The previous prime is 311201121173. The next prime is 311201121251. The reversal of 311201121202 is 202121102113.

It can be written as a sum of positive squares in 4 ways, for example, as 279619921681 + 31581199521 = 528791^2 + 177711^2 .

It is a super-2 number, since 2×311201121202² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001433 + ... + 1274860.

Almost surely, 2^311201121202 is an apocalyptic number.

311201121202 is a deficient number, since it is larger than the sum of its proper divisors (183182620070).

311201121202 is a wasteful number, since it uses less digits than its factorization.

311201121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280333.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 311201121202 its reverse (202121102113), we get a palindrome (513322223315).

The spelling of 311201121202 in words is "three hundred eleven billion, two hundred one million, one hundred twenty-one thousand, two hundred two".