121002111122211 has 72 divisors (see below), whose sum is σ = 210949215068592. Its totient is φ = 69020811763200.

The previous prime is 121002111122129. The next prime is 121002111122219. The reversal of 121002111122211 is 112221111200121.

It is a happy number.

121002111122211 is a `hidden beast` number, since 1 + 210 + 0 + 211 + 11 + 22 + 211 = 666.

It is not a de Polignac number, because 121002111122211 - 2¹³ = 121002111114019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121002111122219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 120538330 + ... + 121538031.

It is an arithmetic number, because the mean of its divisors is an integer number (2929850209286).

Almost surely, 2^{121002111122211} is an apocalyptic number.

121002111122211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121002111122211 is a deficient number, since it is larger than the sum of its proper divisors (89947103946381).

121002111122211 is a wasteful number, since it uses less digits than its factorization.

121002111122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242076415 (or 242076392 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121002111122211 its reverse (112221111200121), we get a palindrome (233223222322332).

The spelling of 121002111122211 in words is "one hundred twenty-one trillion, two billion, one hundred eleven million, one hundred twenty-two thousand, two hundred eleven".