1131112302021 has 32 divisors (see below), whose sum is σ = 1824900336000. Its totient is φ = 688248088704.

The previous prime is 1131112302017. The next prime is 1131112302119. The reversal of 1131112302021 is 1202032111311.

It is not a de Polignac number, because 1131112302021 - 2² = 1131112302017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131112301985 and 1131112302003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131112302421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18072931 + ... + 18135408.

It is an arithmetic number, because the mean of its divisors is an integer number (57028135500).

Almost surely, 2^{1131112302021} is an apocalyptic number.

It is an amenable number.

1131112302021 is a deficient number, since it is larger than the sum of its proper divisors (693788033979).

1131112302021 is a wasteful number, since it uses less digits than its factorization.

1131112302021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36208450 (or 36208444 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1131112302021 its reverse (1202032111311), we get a palindrome (2333144413332).

The spelling of 1131112302021 in words is "one trillion, one hundred thirty-one billion, one hundred twelve million, three hundred two thousand, twenty-one".