222220111120001 has 4 divisors (see below), whose sum is σ = 235291882362372. Its totient is φ = 209148339877632.

The previous prime is 222220111119943. The next prime is 222220111120019. The reversal of 222220111120001 is 100021111022222.

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 135416883039376 + 86803228080625 = 11636876^2 + 9316825^2 .

It is a cyclic number.

It is not a de Polignac number, because 222220111120001 - 2²² = 222220106925697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 13071771242353 = 222220111120001 / (2 + 2 + 2 + 2 + 2 + 0 + 1 + 1 + 1 + 1 + 2 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222220111120031) 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, 6535885621160 + ... + 6535885621193.

It is an arithmetic number, because the mean of its divisors is an integer number (58822970590593).

Almost surely, 2^{222220111120001} is an apocalyptic number.

It is an amenable number.

222220111120001 is a deficient number, since it is larger than the sum of its proper divisors (13071771242371).

222220111120001 is a wasteful number, since it uses less digits than its factorization.

222220111120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13071771242370.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222220111120001 its reverse (100021111022222), we get a palindrome (322241222142223).

The spelling of 222220111120001 in words is "two hundred twenty-two trillion, two hundred twenty billion, one hundred eleven million, one hundred twenty thousand, one".