22122222021002 has 64 divisors (see below), whose sum is σ = 35947340036640. Its totient is φ = 10172795682816.

The previous prime is 22122222021001. The next prime is 22122222021013. The reversal of 22122222021002 is 20012022222122.

It can be written as a sum of positive squares in 16 ways, for example, as 7052057336041 + 15070164684961 = 2655571^2 + 3882031^2 .

It is not an unprimeable number, because it can be changed into a prime (22122222021001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173013398 + ... + 173141214.

Almost surely, 2^{22122222021002} is an apocalyptic number.

22122222021002 is a deficient number, since it is larger than the sum of its proper divisors (13825118015638).

22122222021002 is a wasteful number, since it uses less digits than its factorization.

22122222021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128555.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22122222021002 its reverse (20012022222122), we get a palindrome (42134244243124).

The spelling of 22122222021002 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty-two million, twenty-one thousand, two".