1131103001021 has 32 divisors (see below), whose sum is σ = 1323406149120. Its totient is φ = 946662223104.

The previous prime is 1131103000997. The next prime is 1131103001087. The reversal of 1131103001021 is 1201003011311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1131103001021 - 2⁶ = 1131103000957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131103000987 and 1131103001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131103001221) 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, 108203231 + ... + 108213683.

It is an arithmetic number, because the mean of its divisors is an integer number (41356442160).

Almost surely, 2^{1131103001021} is an apocalyptic number.

It is an amenable number.

1131103001021 is a deficient number, since it is larger than the sum of its proper divisors (192303148099).

1131103001021 is a wasteful number, since it uses less digits than its factorization.

1131103001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11885.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 1131103001021 its reverse (1201003011311), we get a palindrome (2332106012332).

The spelling of 1131103001021 in words is "one trillion, one hundred thirty-one billion, one hundred three million, one thousand, twenty-one".