21000211120110 has 32 divisors (see below), whose sum is σ = 51110372984832. Its totient is φ = 5521182265760.

The previous prime is 21000211120103. The next prime is 21000211120111. The reversal of 21000211120110 is 1102111200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000211120111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4929624894 + ... + 4929629153.

It is an arithmetic number, because the mean of its divisors is an integer number (1597199155776).

Almost surely, 2^{21000211120110} is an apocalyptic number.

21000211120110 is an abundant number, since it is smaller than the sum of its proper divisors (30110161864722).

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

21000211120110 is a wasteful number, since it uses less digits than its factorization.

21000211120110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9859254128.

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

Adding to 21000211120110 its reverse (1102111200012), we get a palindrome (22102322320122).

The spelling of 21000211120110 in words is "twenty-one trillion, two hundred eleven million, one hundred twenty thousand, one hundred ten".