121302431002 has 4 divisors (see below), whose sum is σ = 181953646506. Its totient is φ = 60651215500.

The previous prime is 121302430999. The next prime is 121302431011. The reversal of 121302431002 is 200134203121.

It is a happy number.

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., 108340380801 + 12962050201 = 329151^2 + 113851^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30325607749 + ... + 30325607752.

Almost surely, 2^121302431002 is an apocalyptic number.

121302431002 is a deficient number, since it is larger than the sum of its proper divisors (60651215504).

121302431002 is an equidigital number, since it uses as much as digits as its factorization.

121302431002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60651215503.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121302431002 its reverse (200134203121), we get a palindrome (321436634123).

The spelling of 121302431002 in words is "one hundred twenty-one billion, three hundred two million, four hundred thirty-one thousand, two".