1211011011199 has 16 divisors (see below), whose sum is σ = 1363813115904. Its totient is φ = 1065332167200.

The previous prime is 1211011011151. The next prime is 1211011011241. The reversal of 1211011011199 is 9911101101121.

It is a cyclic number.

It is not a de Polignac number, because 1211011011199 - 2¹⁹ = 1211010486911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211011011599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5168502 + ... + 5397724.

It is an arithmetic number, because the mean of its divisors is an integer number (85238319744).

Almost surely, 2^{1211011011199} is an apocalyptic number.

1211011011199 is a deficient number, since it is larger than the sum of its proper divisors (152802104705).

1211011011199 is a wasteful number, since it uses less digits than its factorization.

1211011011199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244758.

The product of its (nonzero) digits is 162, while the sum is 28.

The spelling of 1211011011199 in words is "one trillion, two hundred eleven billion, eleven million, eleven thousand, one hundred ninety-nine".