222120001004 has 48 divisors (see below), whose sum is σ = 468512626176. Its totient is φ = 90893088000.

The previous prime is 222120001003. The next prime is 222120001007. The reversal of 222120001004 is 400100021222.

It is a super-2 number, since 2×222120001004² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222120001004.

It is not an unprimeable number, because it can be changed into a prime (222120001003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6438272 + ... + 6472679.

It is an arithmetic number, because the mean of its divisors is an integer number (9760679712).

Almost surely, 2^222120001004 is an apocalyptic number.

It is an amenable number.

222120001004 is an abundant number, since it is smaller than the sum of its proper divisors (246392625172).

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

222120001004 is a wasteful number, since it uses less digits than its factorization.

222120001004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12911006 (or 12911004 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222120001004 its reverse (400100021222), we get a palindrome (622220022226).

The spelling of 222120001004 in words is "two hundred twenty-two billion, one hundred twenty million, one thousand, four".