21222101201002 has 32 divisors (see below), whose sum is σ = 35589303550080. Its totient is φ = 9423646384320.

The previous prime is 21222101200967. The next prime is 21222101201003. The reversal of 21222101201002 is 20010210122212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21222101201003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49514574 + ... + 49941337.

It is an arithmetic number, because the mean of its divisors is an integer number (1112165735940).

Almost surely, 2^{21222101201002} is an apocalyptic number.

21222101201002 is a deficient number, since it is larger than the sum of its proper divisors (14367202349078).

21222101201002 is a wasteful number, since it uses less digits than its factorization.

21222101201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99456238.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21222101201002 its reverse (20010210122212), we get a palindrome (41232311323214).

The spelling of 21222101201002 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred one million, two hundred one thousand, two".