22215002 has 4 divisors (see below), whose sum is σ = 33322506. Its totient is φ = 11107500.

The previous prime is 22215001. The next prime is 22215013. The reversal of 22215002 is 20051222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17884441 + 4330561 = 4229^2 + 2081^2 .

It is not an unprimeable number, because it can be changed into a prime (22215001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5553749 + ... + 5553752.

Almost surely, 2^22215002 is an apocalyptic number.

22215002 is a deficient number, since it is larger than the sum of its proper divisors (11107504).

22215002 is a wasteful number, since it uses less digits than its factorization.

22215002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11107503.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 22215002 is about 4713.2793254803. The cubic root of 22215002 is about 281.1137696126.

Adding to 22215002 its reverse (20051222), we get a palindrome (42266224).

The spelling of 22215002 in words is "twenty-two million, two hundred fifteen thousand, two".