1002010121 has 8 divisors (see below), whose sum is σ = 1145347584. Its totient is φ = 858720960.

The previous prime is 1002010109. The next prime is 1002010147. The reversal of 1002010121 is 1210102001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1002010121 - 2²⁶ = 934901257 is a prime.

It is a super-4 number, since 4×1002010121⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002010099 and 1002010108.

It is not an unprimeable number, because it can be changed into a prime (1002010021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66401 + ... + 80081.

It is an arithmetic number, because the mean of its divisors is an integer number (143168448).

Almost surely, 2^1002010121 is an apocalyptic number.

It is an amenable number.

1002010121 is a deficient number, since it is larger than the sum of its proper divisors (143337463).

1002010121 is a wasteful number, since it uses less digits than its factorization.

1002010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24151.

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

The square root of 1002010121 is about 31654.5434495587. The cubic root of 1002010121 is about 1000.6695918800.

Adding to 1002010121 its reverse (1210102001), we get a palindrome (2212112122).

The spelling of 1002010121 in words is "one billion, two million, ten thousand, one hundred twenty-one".