21211021000110 has 16 divisors (see below), whose sum is σ = 50906450400336. Its totient is φ = 5656272266688.

The previous prime is 21211021000093. The next prime is 21211021000139. The reversal of 21211021000110 is 1100012011212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353517016639 + ... + 353517016698.

It is an arithmetic number, because the mean of its divisors is an integer number (3181653150021).

Almost surely, 2^{21211021000110} is an apocalyptic number.

21211021000110 is an abundant number, since it is smaller than the sum of its proper divisors (29695429400226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21211021000110 is a wasteful number, since it uses less digits than its factorization.

21211021000110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707034033347.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21211021000110 its reverse (1100012011212), we get a palindrome (22311033011322).

The spelling of 21211021000110 in words is "twenty-one trillion, two hundred eleven billion, twenty-one million, one hundred ten", and thus it is an aban number.