1211100116407 has 2 divisors, whose sum is σ = 1211100116408. Its totient is φ = 1211100116406.

The previous prime is 1211100116393. The next prime is 1211100116437. The reversal of 1211100116407 is 7046110011121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211100116407 - 2¹¹ = 1211100114359 is a prime.

It is a super-2 number, since 2×1211100116407² (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 (1211100116437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605550058203 + 605550058204.

It is an arithmetic number, because the mean of its divisors is an integer number (605550058204).

Almost surely, 2^{1211100116407} is an apocalyptic number.

1211100116407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211100116407 is an equidigital number, since it uses as much as digits as its factorization.

1211100116407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 25.

Adding to 1211100116407 its reverse (7046110011121), we get a palindrome (8257210127528).

The spelling of 1211100116407 in words is "one trillion, two hundred eleven billion, one hundred million, one hundred sixteen thousand, four hundred seven".