21121021001110 has 8 divisors (see below), whose sum is σ = 38017837802016. Its totient is φ = 8448408400440.

The previous prime is 21121021001089. The next prime is 21121021001123. The reversal of 21121021001110 is 1110012012112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056051050046 + ... + 1056051050065.

It is an arithmetic number, because the mean of its divisors is an integer number (4752229725252).

Almost surely, 2^{21121021001110} is an apocalyptic number.

21121021001110 is a deficient number, since it is larger than the sum of its proper divisors (16896816800906).

21121021001110 is a wasteful number, since it uses less digits than its factorization.

21121021001110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112102100118.

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

Adding to 21121021001110 its reverse (1110012012112), we get a palindrome (22231033013222).

The spelling of 21121021001110 in words is "twenty-one trillion, one hundred twenty-one billion, twenty-one million, one thousand, one hundred ten".