222021221101021 has 8 divisors (see below), whose sum is σ = 222735738386304. Its totient is φ = 221306707807920.

The previous prime is 222021221101019. The next prime is 222021221101081. The reversal of 222021221101021 is 120101122120222.

222021221101021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 222021221101021 - 2¹ = 222021221101019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222021221101021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222021221101081) 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, 144459216 + ... + 145988038.

It is an arithmetic number, because the mean of its divisors is an integer number (27841967298288).

Almost surely, 2^{222021221101021} is an apocalyptic number.

It is an amenable number.

222021221101021 is a deficient number, since it is larger than the sum of its proper divisors (714517285283).

222021221101021 is a wasteful number, since it uses less digits than its factorization.

222021221101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996091.

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

Adding to 222021221101021 its reverse (120101122120222), we get a palindrome (342122343221243).

The spelling of 222021221101021 in words is "two hundred twenty-two trillion, twenty-one billion, two hundred twenty-one million, one hundred one thousand, twenty-one".