21102122211010 has 128 divisors (see below), whose sum is σ = 41921441685504. Its totient is φ = 7612951342080.

The previous prime is 21102122210969. The next prime is 21102122211043. The reversal of 21102122211010 is 1011222120112.

It is a super-3 number, since 3×21102122211010³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1603132689 + ... + 1603145851.

It is an arithmetic number, because the mean of its divisors is an integer number (327511263168).

Almost surely, 2^{21102122211010} is an apocalyptic number.

21102122211010 is a deficient number, since it is larger than the sum of its proper divisors (20819319474494).

21102122211010 is a wasteful number, since it uses less digits than its factorization.

21102122211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16168.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21102122211010 its reverse (1011222120112), we get a palindrome (22113344331122).

The spelling of 21102122211010 in words is "twenty-one trillion, one hundred two billion, one hundred twenty-two million, two hundred eleven thousand, ten".