10111121010 has 24 divisors (see below), whose sum is σ = 26288914860. Its totient is φ = 2696298912.

The previous prime is 10111121003. The next prime is 10111121039. The reversal of 10111121010 is 1012111101.

It can be written as a sum of positive squares in 2 ways, for example, as 9495138249 + 615982761 = 97443^2 + 24819^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10111120983 and 10111121001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56172805 + ... + 56172984.

Almost surely, 2^10111121010 is an apocalyptic number.

10111121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10111121010 is an abundant number, since it is smaller than the sum of its proper divisors (16177793850).

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

10111121010 is a wasteful number, since it uses less digits than its factorization.

10111121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112345802 (or 112345799 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 10111121010 its reverse (1012111101), we get a palindrome (11123232111).

Subtracting from 10111121010 its reverse (1012111101), we obtain a palindrome (9099009909).

The spelling of 10111121010 in words is "ten billion, one hundred eleven million, one hundred twenty-one thousand, ten".