1122222100001 has 4 divisors (see below), whose sum is σ = 1133333210004. Its totient is φ = 1111110990000.

The previous prime is 1122222099989. The next prime is 1122222100009. The reversal of 1122222100001 is 1000012222211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 638952429025 + 483269670976 = 799345^2 + 695176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122222100001 is a prime.

It is a super-5 number, since 5×1122222100001⁵ (a number of 61 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122222100009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5555554850 + ... + 5555555051.

It is an arithmetic number, because the mean of its divisors is an integer number (283333302501).

Almost surely, 2^{1122222100001} is an apocalyptic number.

It is an amenable number.

1122222100001 is a deficient number, since it is larger than the sum of its proper divisors (11111110003).

1122222100001 is a wasteful number, since it uses less digits than its factorization.

1122222100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111110002.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1122222100001 its reverse (1000012222211), we get a palindrome (2122234322212).

The spelling of 1122222100001 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred thousand, one".