21021122022002 has 8 divisors (see below), whose sum is σ = 31531729322496. Its totient is φ = 10510545581172.

The previous prime is 21021122021987. The next prime is 21021122022013. The reversal of 21021122022002 is 20022022112012.

It is a happy number.

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, 5929298 + ... + 8786285.

It is an arithmetic number, because the mean of its divisors is an integer number (3941466165312).

Almost surely, 2^{21021122022002} is an apocalyptic number.

21021122022002 is a deficient number, since it is larger than the sum of its proper divisors (10510607300494).

21021122022002 is a wasteful number, since it uses less digits than its factorization.

21021122022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15429832.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21021122022002 its reverse (20022022112012), we get a palindrome (41043144134014).

The spelling of 21021122022002 in words is "twenty-one trillion, twenty-one billion, one hundred twenty-two million, twenty-two thousand, two".