1222011999999 has 12 divisors (see below), whose sum is σ = 2017289650896. Its totient is φ = 698292571392.

The previous prime is 1222011999997. The next prime is 1222012000021. The reversal of 1222011999999 is 9999991102221.

It is not a de Polignac number, because 1222011999999 - 2¹ = 1222011999997 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 19397015873 = 1222011999999 / (1 + 2 + 2 + 2 + 0 + 1 + 1 + 9 + 9 + 9 + 9 + 9 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222011999997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9698507874 + ... + 9698507999.

It is an arithmetic number, because the mean of its divisors is an integer number (168107470908).

Almost surely, 2^{1222011999999} is an apocalyptic number.

1222011999999 is a deficient number, since it is larger than the sum of its proper divisors (795277650897).

1222011999999 is a wasteful number, since it uses less digits than its factorization.

1222011999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19397015886 (or 19397015883 counting only the distinct ones).

The product of its (nonzero) digits is 4251528, while the sum is 63.

The spelling of 1222011999999 in words is "one trillion, two hundred twenty-two billion, eleven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".