21211110120010 has 32 divisors (see below), whose sum is σ = 39424176340992. Its totient is φ = 8208134538240.

The previous prime is 21211110119963. The next prime is 21211110120043. The reversal of 21211110120010 is 1002101111212.

It is a happy number.

It is a super-2 number, since 2×21211110120010² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9933322 + ... + 11878261.

It is an arithmetic number, because the mean of its divisors is an integer number (1232005510656).

Almost surely, 2^{21211110120010} is an apocalyptic number.

21211110120010 is a deficient number, since it is larger than the sum of its proper divisors (18213066220982).

21211110120010 is a wasteful number, since it uses less digits than its factorization.

21211110120010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21814758.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21211110120010 its reverse (1002101111212), we get a palindrome (22213211231222).

The spelling of 21211110120010 in words is "twenty-one trillion, two hundred eleven billion, one hundred ten million, one hundred twenty thousand, ten".