1111200221001 has 16 divisors (see below), whose sum is σ = 1664942138496. Its totient is φ = 654084410496.

The previous prime is 1111200220997. The next prime is 1111200221039. The reversal of 1111200221001 is 1001220021111.

It is not a de Polignac number, because 1111200221001 - 2² = 1111200220997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111200221041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619397220 + ... + 619399013.

It is an arithmetic number, because the mean of its divisors is an integer number (104058883656).

Almost surely, 2^{1111200221001} is an apocalyptic number.

It is an amenable number.

1111200221001 is a deficient number, since it is larger than the sum of its proper divisors (553741917495).

1111200221001 is a wasteful number, since it uses less digits than its factorization.

1111200221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238796272.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1111200221001 its reverse (1001220021111), we get a palindrome (2112420242112).

The spelling of 1111200221001 in words is "one trillion, one hundred eleven billion, two hundred million, two hundred twenty-one thousand, one".