1211100726379 has 2 divisors, whose sum is σ = 1211100726380. Its totient is φ = 1211100726378.

The previous prime is 1211100726343. The next prime is 1211100726397. The reversal of 1211100726379 is 9736270011121.

It is a happy number.

Together with next prime (1211100726397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211100726379 - 2²⁷ = 1210966508651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211100726679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605550363189 + 605550363190.

It is an arithmetic number, because the mean of its divisors is an integer number (605550363190).

Almost surely, 2^{1211100726379} is an apocalyptic number.

1211100726379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211100726379 is an equidigital number, since it uses as much as digits as its factorization.

1211100726379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 40.

The spelling of 1211100726379 in words is "one trillion, two hundred eleven billion, one hundred million, seven hundred twenty-six thousand, three hundred seventy-nine".