21210221121002 has 8 divisors (see below), whose sum is σ = 32065846104576. Its totient is φ = 10521605752812.

The previous prime is 21210221120953. The next prime is 21210221121043. The reversal of 21210221121002 is 20012112201212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41752403528 + ... + 41752404035.

It is an arithmetic number, because the mean of its divisors is an integer number (4008230763072).

Almost surely, 2^{21210221121002} is an apocalyptic number.

21210221121002 is a deficient number, since it is larger than the sum of its proper divisors (10855624983574).

21210221121002 is a wasteful number, since it uses less digits than its factorization.

21210221121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83504807692.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21210221121002 its reverse (20012112201212), we get a palindrome (41222333322214).

The spelling of 21210221121002 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty-one million, one hundred twenty-one thousand, two".