121001202021010 has 16 divisors (see below), whose sum is σ = 217802992023936. Its totient is φ = 48400296722608.

The previous prime is 121001202021001. The next prime is 121001202021019. The reversal of 121001202021010 is 10120202100121.

It is an interprime number because it is at equal distance from previous prime (121001202021001) and next prime (121001202021019).

It is not an unprimeable number, because it can be changed into a prime (121001202021019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20234074 + ... + 25522933.

It is an arithmetic number, because the mean of its divisors is an integer number (13612687001496).

Almost surely, 2^{121001202021010} is an apocalyptic number.

121001202021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121001202021010 is a deficient number, since it is larger than the sum of its proper divisors (96801790002926).

121001202021010 is a wasteful number, since it uses less digits than its factorization.

121001202021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46021457.

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

Adding to 121001202021010 its reverse (10120202100121), we get a palindrome (131121404121131).

The spelling of 121001202021010 in words is "one hundred twenty-one trillion, one billion, two hundred two million, twenty-one thousand, ten".