121121000010 has 48 divisors (see below), whose sum is σ = 314943842304. Its totient is φ = 32295934176.

The previous prime is 121120999999. The next prime is 121121000089. The reversal of 121121000010 is 10000121121.

It is a happy number.

121121000010 is digitally balanced in base 3, 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 = 121120999956 and 121121000001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1014739 + ... + 1127801.

It is an arithmetic number, because the mean of its divisors is an integer number (6561330048).

Almost surely, 2^121121000010 is an apocalyptic number.

121121000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121121000010 is an abundant number, since it is smaller than the sum of its proper divisors (193822842294).

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

121121000010 is a wasteful number, since it uses less digits than its factorization.

121121000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124979 (or 124976 counting only the distinct ones).

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

Adding to 121121000010 its reverse (10000121121), we get a palindrome (131121121131).

The spelling of 121121000010 in words is "one hundred twenty-one billion, one hundred twenty-one million, ten", and thus it is an aban number.