121211210002 has 4 divisors (see below), whose sum is σ = 181816815006. Its totient is φ = 60605605000.

The previous prime is 121211209981. The next prime is 121211210017. The reversal of 121211210002 is 200012112121.

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., 92021829201 + 29189380801 = 303351^2 + 170849^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30302802499 + ... + 30302802502.

Almost surely, 2^121211210002 is an apocalyptic number.

121211210002 is a deficient number, since it is larger than the sum of its proper divisors (60605605004).

121211210002 is an equidigital number, since it uses as much as digits as its factorization.

121211210002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60605605003.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121211210002 its reverse (200012112121), we get a palindrome (321223322123).

The spelling of 121211210002 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred ten thousand, two".