10020121110 has 24 divisors (see below), whose sum is σ = 26052315120. Its totient is φ = 2672032272.

The previous prime is 10020121081. The next prime is 10020121121. The reversal of 10020121110 is 1112102001.

It is a happy number.

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 = 10020121092 and 10020121101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55667250 + ... + 55667429.

It is an arithmetic number, because the mean of its divisors is an integer number (1085513130).

Almost surely, 2^10020121110 is an apocalyptic number.

10020121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10020121110 is an abundant number, since it is smaller than the sum of its proper divisors (16032194010).

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

10020121110 is a wasteful number, since it uses less digits than its factorization.

10020121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111334692 (or 111334689 counting only the distinct ones).

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

Adding to 10020121110 its reverse (1112102001), we get a palindrome (11132223111).

The spelling of 10020121110 in words is "ten billion, twenty million, one hundred twenty-one thousand, one hundred ten".