1011201109999 has 2 divisors, whose sum is σ = 1011201110000. Its totient is φ = 1011201109998.

The previous prime is 1011201109993. The next prime is 1011201110021. The reversal of 1011201109999 is 9999011021101.

It is a weak prime.

It is an emirp because it is prime and its reverse (9999011021101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1011201109999 - 2²¹ = 1011199012847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011201109993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505600554999 + 505600555000.

It is an arithmetic number, because the mean of its divisors is an integer number (505600555000).

Almost surely, 2^{1011201109999} is an apocalyptic number.

1011201109999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011201109999 is an equidigital number, since it uses as much as digits as its factorization.

1011201109999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 43.

The spelling of 1011201109999 in words is "one trillion, eleven billion, two hundred one million, one hundred nine thousand, nine hundred ninety-nine".