21211120021010 has 64 divisors (see below), whose sum is σ = 38941015161600. Its totient is φ = 8316842284800.

The previous prime is 21211120021009. The next prime is 21211120021019. The reversal of 21211120021010 is 1012002111212.

It is a super-2 number, since 2×21211120021010² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21211120021019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93662996 + ... + 93889184.

It is an arithmetic number, because the mean of its divisors is an integer number (608453361900).

Almost surely, 2^{21211120021010} is an apocalyptic number.

21211120021010 is a deficient number, since it is larger than the sum of its proper divisors (17729895140590).

21211120021010 is a wasteful number, since it uses less digits than its factorization.

21211120021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227027.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21211120021010 its reverse (1012002111212), we get a palindrome (22223122132222).

The spelling of 21211120021010 in words is "twenty-one trillion, two hundred eleven billion, one hundred twenty million, twenty-one thousand, ten".