21011002101002 has 16 divisors (see below), whose sum is σ = 32050949374080. Its totient is φ = 10327355289792.

The previous prime is 21011002100999. The next prime is 21011002101049. The reversal of 21011002101002 is 20010120011012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14781218 + ... + 16140210.

It is an arithmetic number, because the mean of its divisors is an integer number (2003184335880).

Almost surely, 2^{21011002101002} is an apocalyptic number.

21011002101002 is a deficient number, since it is larger than the sum of its proper divisors (11039947273078).

21011002101002 is a wasteful number, since it uses less digits than its factorization.

21011002101002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490077.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21011002101002 its reverse (20010120011012), we get a palindrome (41021122112014).

The spelling of 21011002101002 in words is "twenty-one trillion, eleven billion, two million, one hundred one thousand, two".