1211011011201 has 8 divisors (see below), whose sum is σ = 1615439067424. Its totient is φ = 806961814560.

The previous prime is 1211011011151. The next prime is 1211011011241. The reversal of 1211011011201 is 1021101101121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1211011011201 - 2⁷ = 1211011011073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1211011011241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94707436 + ... + 94720221.

It is an arithmetic number, because the mean of its divisors is an integer number (201929883428).

Almost surely, 2^{1211011011201} is an apocalyptic number.

It is an amenable number.

1211011011201 is a deficient number, since it is larger than the sum of its proper divisors (404428056223).

1211011011201 is a wasteful number, since it uses less digits than its factorization.

1211011011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189429791.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1211011011201 its reverse (1021101101121), we get a palindrome (2232112112322).

It can be divided in two parts, 121101101120 and 1, that added together give a palindrome (121101101121).

The spelling of 1211011011201 in words is "one trillion, two hundred eleven billion, eleven million, eleven thousand, two hundred one".