10200121110 has 96 divisors (see below), whose sum is σ = 26741145600. Its totient is φ = 2697482304.

The previous prime is 10200121073. The next prime is 10200121133. The reversal of 10200121110 is 1112100201.

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 = 10200121092 and 10200121101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6858787 + ... + 6860273.

It is an arithmetic number, because the mean of its divisors is an integer number (278553600).

Almost surely, 2^10200121110 is an apocalyptic number.

10200121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10200121110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13370572800).

10200121110 is an abundant number, since it is smaller than the sum of its proper divisors (16541024490).

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

10200121110 is a wasteful number, since it uses less digits than its factorization.

10200121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082 (or 2079 counting only the distinct ones).

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

Adding to 10200121110 its reverse (1112100201), we get a palindrome (11312221311).

The spelling of 10200121110 in words is "ten billion, two hundred million, one hundred twenty-one thousand, one hundred ten".