100121201002 has 4 divisors (see below), whose sum is σ = 150181801506. Its totient is φ = 50060600500.

The previous prime is 100121200999. The next prime is 100121201009. The reversal of 100121201002 is 200102121001.

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., 73435038121 + 26686162881 = 270989^2 + 163359^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 100121201002.

It is not an unprimeable number, because it can be changed into a prime (100121201009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25030300249 + ... + 25030300252.

Almost surely, 2^100121201002 is an apocalyptic number.

100121201002 is a deficient number, since it is larger than the sum of its proper divisors (50060600504).

100121201002 is an equidigital number, since it uses as much as digits as its factorization.

100121201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50060600503.

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

Adding to 100121201002 its reverse (200102121001), we get a palindrome (300223322003).

The spelling of 100121201002 in words is "one hundred billion, one hundred twenty-one million, two hundred one thousand, two".