222111101222021 has 8 divisors (see below), whose sum is σ = 256556138310144. Its totient is φ = 190041583933120.

The previous prime is 222111101221949. The next prime is 222111101222069. The reversal of 222111101222021 is 120222101111222.

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 222111101222021 - 2⁴⁶ = 151742357044357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222111101221984 and 222111101222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222111101222081) 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, 593879949605 + ... + 593879949978.

It is an arithmetic number, because the mean of its divisors is an integer number (32069517288768).

Almost surely, 2^{222111101222021} is an apocalyptic number.

It is an amenable number.

222111101222021 is a deficient number, since it is larger than the sum of its proper divisors (34445037088123).

222111101222021 is a wasteful number, since it uses less digits than its factorization.

222111101222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187759899611.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222111101222021 its reverse (120222101111222), we get a palindrome (342333202333243).

The spelling of 222111101222021 in words is "two hundred twenty-two trillion, one hundred eleven billion, one hundred one million, two hundred twenty-two thousand, twenty-one".