1000010100121 has 4 divisors (see below), whose sum is σ = 1000012107472. Its totient is φ = 1000008092772.

The previous prime is 1000010100101. The next prime is 1000010100169. The reversal of 1000010100121 is 1210010100001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1000010100121 - 2²¹ = 1000008002969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000010100101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373210 + ... + 1462636.

It is an arithmetic number, because the mean of its divisors is an integer number (250003026868).

Almost surely, 2^{1000010100121} is an apocalyptic number.

It is an amenable number.

1000010100121 is a deficient number, since it is larger than the sum of its proper divisors (2007351).

1000010100121 is an equidigital number, since it uses as much as digits as its factorization.

1000010100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007350.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 1000010100121 its reverse (1210010100001), we get a palindrome (2210020200122).

The spelling of 1000010100121 in words is "one trillion, ten million, one hundred thousand, one hundred twenty-one".