121201120121122 has 4 divisors (see below), whose sum is σ = 181801680181686. Its totient is φ = 60600560060560.

The previous prime is 121201120121119. The next prime is 121201120121129. The reversal of 121201120121122 is 221121021102121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 117473320697121 + 3727799424001 = 10838511^2 + 1930751^2 .

It is a super-2 number, since 2×121201120121122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121201120121122.

It is not an unprimeable number, because it can be changed into a prime (121201120121129) 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 as a sum of consecutive naturals, namely, 30300280030279 + ... + 30300280030282.

Almost surely, 2^{121201120121122} is an apocalyptic number.

121201120121122 is a deficient number, since it is larger than the sum of its proper divisors (60600560060564).

121201120121122 is an equidigital number, since it uses as much as digits as its factorization.

121201120121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60600560060563.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121201120121122 its reverse (221121021102121), we get a palindrome (342322141223243).

The spelling of 121201120121122 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twenty million, one hundred twenty-one thousand, one hundred twenty-two".