1131220001131 has 8 divisors (see below), whose sum is σ = 1246276582128. Its totient is φ = 1018199820000.

The previous prime is 1131220001111. The next prime is 1131220001147. The reversal of 1131220001131 is 1311000221311.

It is a happy number.

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

It is not a de Polignac number, because 1131220001131 - 2⁷ = 1131220001003 is a prime.

It is a super-2 number, since 2×1131220001131² (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 (1131220001111) 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, 509098800 + ... + 509101021.

It is an arithmetic number, because the mean of its divisors is an integer number (155784572766).

Almost surely, 2^{1131220001131} is an apocalyptic number.

1131220001131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131220001131 is a deficient number, since it is larger than the sum of its proper divisors (115056580997).

1131220001131 is a wasteful number, since it uses less digits than its factorization.

1131220001131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018199933.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1131220001131 its reverse (1311000221311), we get a palindrome (2442220222442).

The spelling of 1131220001131 in words is "one trillion, one hundred thirty-one billion, two hundred twenty million, one thousand, one hundred thirty-one".