1000121210120 has 64 divisors (see below), whose sum is σ = 2402960947200. Its totient is φ = 373793898240.

The previous prime is 1000121210119. The next prime is 1000121210129. The reversal of 1000121210120 is 210121210001.

It is not an unprimeable number, because it can be changed into a prime (1000121210129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13870064 + ... + 13941983.

It is an arithmetic number, because the mean of its divisors is an integer number (37546264800).

Almost surely, 2^{1000121210120} is an apocalyptic number.

1000121210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000121210120 is an abundant number, since it is smaller than the sum of its proper divisors (1402839737080).

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

1000121210120 is a wasteful number, since it uses less digits than its factorization.

1000121210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27812118 (or 27812114 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1000121210120 its reverse (210121210001), we get a palindrome (1210242420121).

The spelling of 1000121210120 in words is "one trillion, one hundred twenty-one million, two hundred ten thousand, one hundred twenty".