1211100130319 has 4 divisors (see below), whose sum is σ = 1212347402280. Its totient is φ = 1209852858360.

The previous prime is 1211100130291. The next prime is 1211100130351. The reversal of 1211100130319 is 9130310011121.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211100130319 is a prime.

It is a super-2 number, since 2×1211100130319² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211100130294 and 1211100130303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211100130519) 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, 623634524 + ... + 623636465.

It is an arithmetic number, because the mean of its divisors is an integer number (303086850570).

Almost surely, 2^{1211100130319} is an apocalyptic number.

1211100130319 is a deficient number, since it is larger than the sum of its proper divisors (1247271961).

1211100130319 is an equidigital number, since it uses as much as digits as its factorization.

1211100130319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247271960.

The product of its (nonzero) digits is 162, while the sum is 23.

The spelling of 1211100130319 in words is "one trillion, two hundred eleven billion, one hundred million, one hundred thirty thousand, three hundred nineteen".