22222421002 has 8 divisors (see below), whose sum is σ = 33428062116. Its totient is φ = 11079733632.

The previous prime is 22222420993. The next prime is 22222421003. The reversal of 22222421002 is 20012422222.

It can be written as a sum of positive squares in 2 ways, for example, as 19315162441 + 2907258561 = 138979^2 + 53919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22222421003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15737553 + ... + 15738964.

Almost surely, 2^22222421002 is an apocalyptic number.

22222421002 is a deficient number, since it is larger than the sum of its proper divisors (11205641114).

22222421002 is a wasteful number, since it uses less digits than its factorization.

22222421002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31476872.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 22222421002 its reverse (20012422222), we get a palindrome (42234843224).

The spelling of 22222421002 in words is "twenty-two billion, two hundred twenty-two million, four hundred twenty-one thousand, two".