21201102022002 has 64 divisors (see below), whose sum is σ = 48642061317120. Its totient is φ = 6034659868224.

The previous prime is 21201102021977. The next prime is 21201102022007. The reversal of 21201102022002 is 20022020110212.

It is not an unprimeable number, because it can be changed into a prime (21201102022007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 453738213 + ... + 453784935.

It is an arithmetic number, because the mean of its divisors is an integer number (760032208080).

Almost surely, 2^{21201102022002} is an apocalyptic number.

21201102022002 is an abundant number, since it is smaller than the sum of its proper divisors (27440959295118).

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

21201102022002 is a wasteful number, since it uses less digits than its factorization.

21201102022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87167.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21201102022002 its reverse (20022020110212), we get a palindrome (41223122132214).

The spelling of 21201102022002 in words is "twenty-one trillion, two hundred one billion, one hundred two million, twenty-two thousand, two".