21011110010002 has 32 divisors (see below), whose sum is σ = 37585385616384. Its totient is φ = 8613182595600.

The previous prime is 21011110009991. The next prime is 21011110010003. The reversal of 21011110010002 is 20001001111012.

It is not an unprimeable number, because it can be changed into a prime (21011110010003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79573177 + ... + 79836787.

It is an arithmetic number, because the mean of its divisors is an integer number (1174543300512).

Almost surely, 2^{21011110010002} is an apocalyptic number.

21011110010002 is a deficient number, since it is larger than the sum of its proper divisors (16574275606382).

21011110010002 is a wasteful number, since it uses less digits than its factorization.

21011110010002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511174.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21011110010002 its reverse (20001001111012), we get a palindrome (41012111121014).

The spelling of 21011110010002 in words is "twenty-one trillion, eleven billion, one hundred ten million, ten thousand, two".