1131212031101 has 16 divisors (see below), whose sum is σ = 1184961993600. Its totient is φ = 1077846948288.

The previous prime is 1131212031073. The next prime is 1131212031121. The reversal of 1131212031101 is 1011302121311.

It is a cyclic number.

It is not a de Polignac number, because 1131212031101 - 2¹⁴ = 1131212014717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131212031101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131212031121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11736815 + ... + 11832803.

It is an arithmetic number, because the mean of its divisors is an integer number (74060124600).

Almost surely, 2^{1131212031101} is an apocalyptic number.

It is an amenable number.

1131212031101 is a deficient number, since it is larger than the sum of its proper divisors (53749962499).

1131212031101 is a wasteful number, since it uses less digits than its factorization.

1131212031101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97988.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1131212031101 its reverse (1011302121311), we get a palindrome (2142514152412).

The spelling of 1131212031101 in words is "one trillion, one hundred thirty-one billion, two hundred twelve million, thirty-one thousand, one hundred one".