1212222011101 has 32 divisors (see below), whose sum is σ = 1344572006400. Its totient is φ = 1088816489280.

The previous prime is 1212222011059. The next prime is 1212222011107. The reversal of 1212222011101 is 1011102222121.

It is a cyclic number.

It is not a de Polignac number, because 1212222011101 - 2¹⁵ = 1212221978333 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 (1212222011107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3576886 + ... + 3901096.

It is an arithmetic number, because the mean of its divisors is an integer number (42017875200).

Almost surely, 2^{1212222011101} is an apocalyptic number.

It is an amenable number.

1212222011101 is a deficient number, since it is larger than the sum of its proper divisors (132349995299).

1212222011101 is a wasteful number, since it uses less digits than its factorization.

1212222011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324409.

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

Adding to 1212222011101 its reverse (1011102222121), we get a palindrome (2223324233222).

The spelling of 1212222011101 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, eleven thousand, one hundred one".