1211211102011 has 8 divisors (see below), whose sum is σ = 1304195405040. Its totient is φ = 1120641975808.

The previous prime is 1211211102007. The next prime is 1211211102061. The reversal of 1211211102011 is 1102011121121.

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

It is not a de Polignac number, because 1211211102011 - 2² = 1211211102007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211211102061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603793166 + ... + 603795171.

It is an arithmetic number, because the mean of its divisors is an integer number (163024425630).

Almost surely, 2^{1211211102011} is an apocalyptic number.

1211211102011 is a deficient number, since it is larger than the sum of its proper divisors (92984303029).

1211211102011 is a wasteful number, since it uses less digits than its factorization.

1211211102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207588413.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1211211102011 its reverse (1102011121121), we get a palindrome (2313222223132).

It can be divided in two parts, 121121 and 1102011, that multiplied together give a palindrome (133476674331).

The spelling of 1211211102011 in words is "one trillion, two hundred eleven billion, two hundred eleven million, one hundred two thousand, eleven".