121122020111211 has 96 divisors (see below), whose sum is σ = 206510888263680. Its totient is φ = 66972819598272.

The previous prime is 121122020111167. The next prime is 121122020111219. The reversal of 121122020111211 is 112111020221121.

It is a happy number.

121122020111211 is a `hidden beast` number, since 1 + 21 + 1 + 220 + 201 + 11 + 211 = 666.

It is not a de Polignac number, because 121122020111211 - 2⁷ = 121122020111083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121122020111219) 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 95 ways as a sum of consecutive naturals, for example, 175504926 + ... + 176193708.

It is an arithmetic number, because the mean of its divisors is an integer number (2151155086080).

Almost surely, 2^{121122020111211} is an apocalyptic number.

121122020111211 is a deficient number, since it is larger than the sum of its proper divisors (85388868152469).

121122020111211 is a wasteful number, since it uses less digits than its factorization.

121122020111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689445 (or 689442 counting only the distinct ones).

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

Adding to 121122020111211 its reverse (112111020221121), we get a palindrome (233233040332332).

The spelling of 121122020111211 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, twenty million, one hundred eleven thousand, two hundred eleven".