21121034110 has 64 divisors (see below), whose sum is σ = 42127646400. Its totient is φ = 7560115200.

The previous prime is 21121034101. The next prime is 21121034117. The reversal of 21121034110 is 1143012112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121034117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2237200 + ... + 2246620.

It is an arithmetic number, because the mean of its divisors is an integer number (658244475).

Almost surely, 2^21121034110 is an apocalyptic number.

21121034110 is a deficient number, since it is larger than the sum of its proper divisors (21006612290).

21121034110 is a wasteful number, since it uses less digits than its factorization.

21121034110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9757.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21121034110 its reverse (1143012112), we get a palindrome (22264046222).

The spelling of 21121034110 in words is "twenty-one billion, one hundred twenty-one million, thirty-four thousand, one hundred ten".