121022133121 has 4 divisors (see below), whose sum is σ = 121173981012. Its totient is φ = 120870285232.

The previous prime is 121022133013. The next prime is 121022133137. The reversal of 121022133121 is 121331220121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26812425025 + 94209708096 = 163745^2 + 306936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121022133121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121022133151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75922750 + ... + 75924343.

It is an arithmetic number, because the mean of its divisors is an integer number (30293495253).

Almost surely, 2^121022133121 is an apocalyptic number.

It is an amenable number.

121022133121 is a deficient number, since it is larger than the sum of its proper divisors (151847891).

121022133121 is an equidigital number, since it uses as much as digits as its factorization.

121022133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151847890.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121022133121 its reverse (121331220121), we get a palindrome (242353353242).

The spelling of 121022133121 in words is "one hundred twenty-one billion, twenty-two million, one hundred thirty-three thousand, one hundred twenty-one".