1121210019823 has 2 divisors, whose sum is σ = 1121210019824. Its totient is φ = 1121210019822.

The previous prime is 1121210019781. The next prime is 1121210019829. The reversal of 1121210019823 is 3289100121211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121210019823 - 2²⁵ = 1121176465391 is a prime.

It is a super-2 number, since 2×1121210019823² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121210019829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560605009911 + 560605009912.

It is an arithmetic number, because the mean of its divisors is an integer number (560605009912).

Almost surely, 2^{1121210019823} is an apocalyptic number.

1121210019823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121210019823 is an equidigital number, since it uses as much as digits as its factorization.

1121210019823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 1121210019823 in words is "one trillion, one hundred twenty-one billion, two hundred ten million, nineteen thousand, eight hundred twenty-three".