121021010002 has 4 divisors (see below), whose sum is σ = 181531515006. Its totient is φ = 60510505000.

The previous prime is 121021009987. The next prime is 121021010003. The reversal of 121021010002 is 200010120121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 62194873321 + 58826136681 = 249389^2 + 242541^2 .

It is not an unprimeable number, because it can be changed into a prime (121021010003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30255252499 + ... + 30255252502.

Almost surely, 2^121021010002 is an apocalyptic number.

121021010002 is a deficient number, since it is larger than the sum of its proper divisors (60510505004).

121021010002 is an equidigital number, since it uses as much as digits as its factorization.

121021010002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60510505003.

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

Adding to 121021010002 its reverse (200010120121), we get a palindrome (321031130123).

The spelling of 121021010002 in words is "one hundred twenty-one billion, twenty-one million, ten thousand, two".