121122121013 has 4 divisors (see below), whose sum is σ = 121125799968. Its totient is φ = 121118442060.

The previous prime is 121122120997. The next prime is 121122121019. The reversal of 121122121013 is 310121221121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121122121013 - 2⁴ = 121122120997 is a prime.

It is a super-2 number, since 2×121122121013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121122120982 and 121122121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122121019) 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, 1789643 + ... + 1856088.

It is an arithmetic number, because the mean of its divisors is an integer number (30281449992).

Almost surely, 2^121122121013 is an apocalyptic number.

It is an amenable number.

121122121013 is a deficient number, since it is larger than the sum of its proper divisors (3678955).

121122121013 is an equidigital number, since it uses as much as digits as its factorization.

121122121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3678954.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121122121013 its reverse (310121221121), we get a palindrome (431243342134).

The spelling of 121122121013 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty-one thousand, thirteen".