121122210121122 has 32 divisors (see below), whose sum is σ = 277903430525952. Its totient is φ = 34474762682064.

The previous prime is 121122210121097. The next prime is 121122210121127. The reversal of 121122210121122 is 221121012221121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (121122210121127) 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 15 ways as a sum of consecutive naturals, for example, 5482616608 + ... + 5482638699.

It is an arithmetic number, because the mean of its divisors is an integer number (8684482203936).

Almost surely, 2^{121122210121122} is an apocalyptic number.

121122210121122 is an abundant number, since it is smaller than the sum of its proper divisors (156781220404830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121122210121122 is a wasteful number, since it uses less digits than its factorization.

121122210121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10965255582.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 121122210121122 its reverse (221121012221121), we get a palindrome (342243222342243).

The spelling of 121122210121122 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred ten million, one hundred twenty-one thousand, one hundred twenty-two".