221022210222021 has 8 divisors (see below), whose sum is σ = 317365224934240. Its totient is φ = 136013667828912.

The previous prime is 221022210221957. The next prime is 221022210222061. The reversal of 221022210222021 is 120222012220122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221022210222021 - 2⁶ = 221022210221957 is a prime.

It is a super-2 number, since 2×221022210222021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221022210222061) 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, 2833618079731 + ... + 2833618079808.

It is an arithmetic number, because the mean of its divisors is an integer number (39670653116780).

Almost surely, 2^{221022210222021} is an apocalyptic number.

It is an amenable number.

221022210222021 is a deficient number, since it is larger than the sum of its proper divisors (96343014712219).

221022210222021 is a wasteful number, since it uses less digits than its factorization.

221022210222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5667236159555.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221022210222021 its reverse (120222012220122), we get a palindrome (341244222442143).

The spelling of 221022210222021 in words is "two hundred twenty-one trillion, twenty-two billion, two hundred ten million, two hundred twenty-two thousand, twenty-one".