22222101121002 has 24 divisors (see below), whose sum is σ = 48148248772260. Its totient is φ = 7407311192640.

The previous prime is 22222101121001. The next prime is 22222101121039. The reversal of 22222101121002 is 20012110122222.

It is a happy number.

22222101121002 is a `hidden beast` number, since 222 + 221 + 0 + 11 + 210 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22222069412841 + 31708161 = 4714029^2 + 5631^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22222101121001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2164227 + ... + 7009142.

Almost surely, 2^{22222101121002} is an apocalyptic number.

22222101121002 is an abundant number, since it is smaller than the sum of its proper divisors (25926147651258).

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

22222101121002 is a wasteful number, since it uses less digits than its factorization.

22222101121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9307958 (or 9307955 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22222101121002 its reverse (20012110122222), we get a palindrome (42234211243224).

The spelling of 22222101121002 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred one million, one hundred twenty-one thousand, two".