21011022002002 has 32 divisors (see below), whose sum is σ = 33834603737088. Its totient is φ = 9750944157696.

The previous prime is 21011022001999. The next prime is 21011022002077. The reversal of 21011022002002 is 20020022011012.

It is a happy number.

It is a super-2 number, since 2×21011022002002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13847503 + ... + 15289714.

It is an arithmetic number, because the mean of its divisors is an integer number (1057331366784).

Almost surely, 2^{21011022002002} is an apocalyptic number.

21011022002002 is a deficient number, since it is larger than the sum of its proper divisors (12823581735086).

21011022002002 is a wasteful number, since it uses less digits than its factorization.

21011022002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29137530.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21011022002002 its reverse (20020022011012), we get a palindrome (41031044013014).

The spelling of 21011022002002 in words is "twenty-one trillion, eleven billion, twenty-two million, two thousand, two".