221222202021123 has 8 divisors (see below), whose sum is σ = 294991415642448. Its totient is φ = 147467228206944.

The previous prime is 221222202021109. The next prime is 221222202021127. The reversal of 221222202021123 is 321120202222122.

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

It is not a de Polignac number, because 221222202021123 - 2⁶ = 221222202021059 is a prime.

It is a super-2 number, since 2×221222202021123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221222202021093 and 221222202021102.

It is not an unprimeable number, because it can be changed into a prime (221222202021127) 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, 3559915536 + ... + 3559977677.

It is an arithmetic number, because the mean of its divisors is an integer number (36873926955306).

Almost surely, 2^{221222202021123} is an apocalyptic number.

221222202021123 is a deficient number, since it is larger than the sum of its proper divisors (73769213621325).

221222202021123 is a wasteful number, since it uses less digits than its factorization.

221222202021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7119903573.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 221222202021123 its reverse (321120202222122), we get a palindrome (542342404243245).

The spelling of 221222202021123 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, two hundred two million, twenty-one thousand, one hundred twenty-three".