21100220122010 has 32 divisors (see below), whose sum is σ = 39657604620672. Its totient is φ = 8067854456640.

The previous prime is 21100220121889. The next prime is 21100220122061. The reversal of 21100220122010 is 1022102200112.

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, 29608709 + ... + 30312968.

It is an arithmetic number, because the mean of its divisors is an integer number (1239300144396).

Almost surely, 2^{21100220122010} is an apocalyptic number.

21100220122010 is a deficient number, since it is larger than the sum of its proper divisors (18557384498662).

21100220122010 is a wasteful number, since it uses less digits than its factorization.

21100220122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59923238.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21100220122010 its reverse (1022102200112), we get a palindrome (22122322322122).

The spelling of 21100220122010 in words is "twenty-one trillion, one hundred billion, two hundred twenty million, one hundred twenty-two thousand, ten".