1211102222011 has 8 divisors (see below), whose sum is σ = 1321216696944. Its totient is φ = 1100990125920.

The previous prime is 1211102221969. The next prime is 1211102222039. The reversal of 1211102222011 is 1102222011121.

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

It is a cyclic number.

It is not a de Polignac number, because 1211102222011 - 2³¹ = 1208954738363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211102222051) 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, 568785 + ... + 1657021.

It is an arithmetic number, because the mean of its divisors is an integer number (165152087118).

Almost surely, 2^{1211102222011} is an apocalyptic number.

1211102222011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1211102222011 is a deficient number, since it is larger than the sum of its proper divisors (110114474933).

1211102222011 is a wasteful number, since it uses less digits than its factorization.

1211102222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189421.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211102222011 its reverse (1102222011121), we get a palindrome (2313324233132).

It can be divided in two parts, 121 and 1102222011, that multiplied together give a palindrome (133368863331).

The spelling of 1211102222011 in words is "one trillion, two hundred eleven billion, one hundred two million, two hundred twenty-two thousand, eleven".