1000121020010 has 64 divisors (see below), whose sum is σ = 2107976742144. Its totient is φ = 334471027200.

The previous prime is 1000121019943. The next prime is 1000121020027. The reversal of 1000121020010 is 100201210001.

It is a self number, because there is not a number n which added to its sum of digits gives 1000121020010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16308305 + ... + 16369515.

It is an arithmetic number, because the mean of its divisors is an integer number (32937136596).

Almost surely, 2^{1000121020010} is an apocalyptic number.

1000121020010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000121020010 is an abundant number, since it is smaller than the sum of its proper divisors (1107855722134).

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

1000121020010 is a wasteful number, since it uses less digits than its factorization.

1000121020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66959.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1000121020010 its reverse (100201210001), we get a palindrome (1100322230011).

The spelling of 1000121020010 in words is "one trillion, one hundred twenty-one million, twenty thousand, ten".