22120002 has 12 divisors (see below), whose sum is σ = 47926710. Its totient is φ = 7373328.

The previous prime is 22119989. The next prime is 22120031. The reversal of 22120002 is 20002122.

It can be written as a sum of positive squares in only one way, i.e., 11758041 + 10361961 = 3429^2 + 3219^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 614427 + ... + 614462.

Almost surely, 2^22120002 is an apocalyptic number.

22120002 is an abundant number, since it is smaller than the sum of its proper divisors (25806708).

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

22120002 is a wasteful number, since it uses less digits than its factorization.

22120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228897 (or 1228894 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 22120002 is about 4703.1906191436. The cubic root of 22120002 is about 280.7124797251.

Adding to 22120002 its reverse (20002122), we get a palindrome (42122124).

The spelling of 22120002 in words is "twenty-two million, one hundred twenty thousand, two".