1000000121000 has 64 divisors (see below), whose sum is σ = 2340684103680. Its totient is φ = 399883156800.

The previous prime is 1000000120957. The next prime is 1000000121011. The reversal of 1000000121000 is 1210000001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (5).

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 15 ways as a sum of consecutive naturals, for example, 3318617 + ... + 3607383.

It is an arithmetic number, because the mean of its divisors is an integer number (36573189120).

Almost surely, 2^{1000000121000} is an apocalyptic number.

1000000121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000000121000 is an abundant number, since it is smaller than the sum of its proper divisors (1340683982680).

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

1000000121000 is a wasteful number, since it uses less digits than its factorization.

1000000121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292251 (or 292237 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 1000000121000 its reverse (1210000001), we get a palindrome (1001210121001).

The spelling of 1000000121000 in words is "one trillion, one hundred twenty-one thousand".