221001002022 has 16 divisors (see below), whose sum is σ = 452782541232. Its totient is φ = 71870244480.

The previous prime is 221001002009. The next prime is 221001002059. The reversal of 221001002022 is 220200100122.

It is a junction number, because it is equal to n+sod(n) for n = 221001001989 and 221001002007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449188783 + ... + 449189274.

It is an arithmetic number, because the mean of its divisors is an integer number (28298908827).

Almost surely, 2^221001002022 is an apocalyptic number.

221001002022 is an abundant number, since it is smaller than the sum of its proper divisors (231781539210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221001002022 is a wasteful number, since it uses less digits than its factorization.

221001002022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898378103.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221001002022 its reverse (220200100122), we get a palindrome (441201102144).

The spelling of 221001002022 in words is "two hundred twenty-one billion, one million, two thousand, twenty-two".