20121001110 has 48 divisors (see below), whose sum is σ = 59788119456. Its totient is φ = 4599085824.

The previous prime is 20121001091. The next prime is 20121001111. The reversal of 20121001110 is 1110012102.

It is a happy number.

20121001110 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20121001092 and 20121001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121001111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15968419 + ... + 15969678.

It is an arithmetic number, because the mean of its divisors is an integer number (1245585822).

Almost surely, 2^20121001110 is an apocalyptic number.

20121001110 is an abundant number, since it is smaller than the sum of its proper divisors (39667118346).

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

20121001110 is a wasteful number, since it uses less digits than its factorization.

20121001110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31938117 (or 31938114 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20121001110 its reverse (1110012102), we get a palindrome (21231013212).

The spelling of 20121001110 in words is "twenty billion, one hundred twenty-one million, one thousand, one hundred ten".