121012001002 has 8 divisors (see below), whose sum is σ = 181519506756. Its totient is φ = 60505498752.

The previous prime is 121012000997. The next prime is 121012001003. The reversal of 121012001002 is 200100210121.

It can be written as a sum of positive squares in 2 ways, for example, as 120076803441 + 935197561 = 346521^2 + 30581^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 121012001002.

It is not an unprimeable number, because it can be changed into a prime (121012001003) 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 3 ways as a sum of consecutive naturals, for example, 253018 + ... + 553210.

Almost surely, 2^121012001002 is an apocalyptic number.

121012001002 is a deficient number, since it is larger than the sum of its proper divisors (60507505754).

121012001002 is a wasteful number, since it uses less digits than its factorization.

121012001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501752.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121012001002 its reverse (200100210121), we get a palindrome (321112211123).

The spelling of 121012001002 in words is "one hundred twenty-one billion, twelve million, one thousand, two".