1131022201331 has 4 divisors (see below), whose sum is σ = 1233842401464. Its totient is φ = 1028202001200.

The previous prime is 1131022201303. The next prime is 1131022201333. The reversal of 1131022201331 is 1331022201311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1131022201331 - 2²⁶ = 1130955092467 is a prime.

It is a super-2 number, since 2×1131022201331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131022201333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51410100050 + ... + 51410100071.

It is an arithmetic number, because the mean of its divisors is an integer number (308460600366).

Almost surely, 2^{1131022201331} is an apocalyptic number.

1131022201331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131022201331 is a deficient number, since it is larger than the sum of its proper divisors (102820200133).

1131022201331 is a wasteful number, since it uses less digits than its factorization.

1131022201331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102820200132.

The product of its (nonzero) digits is 216, while the sum is 20.

Subtracting from 1131022201331 its sum of digits (20), we obtain a palindrome (1131022201311).

Adding to 1131022201331 its reverse (1331022201311), we get a palindrome (2462044402642).

The spelling of 1131022201331 in words is "one trillion, one hundred thirty-one billion, twenty-two million, two hundred one thousand, three hundred thirty-one".