111222221202001 has 8 divisors (see below), whose sum is σ = 136888887633344. Its totient is φ = 87999999192720.

The previous prime is 111222221201911. The next prime is 111222221202031. The reversal of 111222221202001 is 100202122222111.

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 111222221202001 - 2³⁷ = 111084782248529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111222221202001.

It is not an unprimeable number, because it can be changed into a prime (111222221202031) 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, 611111105415 + ... + 611111105596.

It is an arithmetic number, because the mean of its divisors is an integer number (17111110954168).

Almost surely, 2^{111222221202001} is an apocalyptic number.

It is an amenable number.

111222221202001 is a deficient number, since it is larger than the sum of its proper divisors (25666666431343).

111222221202001 is a wasteful number, since it uses less digits than its factorization.

111222221202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222222211031.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111222221202001 its reverse (100202122222111), we get a palindrome (211424343424112).

The spelling of 111222221202001 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred two thousand, one".