222212111221021 has 8 divisors (see below), whose sum is σ = 222392843749440. Its totient is φ = 222031385415168.

The previous prime is 222212111221007. The next prime is 222212111221031. The reversal of 222212111221021 is 120122111212222.

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 222212111221021 - 2¹³ = 222212111212829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222212111220983 and 222212111221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222212111221031) 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, 65548320 + ... + 68854966.

It is an arithmetic number, because the mean of its divisors is an integer number (27799105468680).

Almost surely, 2^{222212111221021} is an apocalyptic number.

It is an amenable number.

222212111221021 is a deficient number, since it is larger than the sum of its proper divisors (180732528419).

222212111221021 is a wasteful number, since it uses less digits than its factorization.

222212111221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361283.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 222212111221021 its reverse (120122111212222), we get a palindrome (342334222433243).

The spelling of 222212111221021 in words is "two hundred twenty-two trillion, two hundred twelve billion, one hundred eleven million, two hundred twenty-one thousand, twenty-one".