221222023002 has 48 divisors (see below), whose sum is σ = 488662736328. Its totient is φ = 72304202880.

The previous prime is 221222022997. The next prime is 221222023019. The reversal of 221222023002 is 200320222122.

221222023002 is a `hidden beast` number, since 2 + 212 + 220 + 230 + 0 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 210524051241 + 10697971761 = 458829^2 + 103431^2 .

It is a super-2 number, since 2×221222023002² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1474908 + ... + 1617960.

Almost surely, 2^221222023002 is an apocalyptic number.

221222023002 is an abundant number, since it is smaller than the sum of its proper divisors (267440713326).

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

221222023002 is a wasteful number, since it uses less digits than its factorization.

221222023002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144735 (or 144732 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 221222023002 its reverse (200320222122), we get a palindrome (421542245124).

The spelling of 221222023002 in words is "two hundred twenty-one billion, two hundred twenty-two million, twenty-three thousand, two".