121221020010211 has 16 divisors (see below), whose sum is σ = 134310928744800. Its totient is φ = 108486894700800.

The previous prime is 121221020010203. The next prime is 121221020010227. The reversal of 121221020010211 is 112010020122121.

It is not a de Polignac number, because 121221020010211 - 2³ = 121221020010203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121221020010281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270127920 + ... + 270576301.

It is an arithmetic number, because the mean of its divisors is an integer number (8394433046550).

Almost surely, 2^{121221020010211} is an apocalyptic number.

121221020010211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121221020010211 is a deficient number, since it is larger than the sum of its proper divisors (13089908734589).

121221020010211 is a wasteful number, since it uses less digits than its factorization.

121221020010211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540704550.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121221020010211 its reverse (112010020122121), we get a palindrome (233231040132332).

The spelling of 121221020010211 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty million, ten thousand, two hundred eleven".