121011022013 has 4 divisors (see below), whose sum is σ = 138298310880. Its totient is φ = 103723733148.

The previous prime is 121011022007. The next prime is 121011022049. The reversal of 121011022013 is 310220110121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 310220110121 = 142771 ⋅2172851.

It is not a de Polignac number, because 121011022013 - 2¹⁴ = 121011005629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011022513) 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, 8643644423 + ... + 8643644436.

It is an arithmetic number, because the mean of its divisors is an integer number (34574577720).

Almost surely, 2^121011022013 is an apocalyptic number.

It is an amenable number.

121011022013 is a deficient number, since it is larger than the sum of its proper divisors (17287288867).

121011022013 is an equidigital number, since it uses as much as digits as its factorization.

121011022013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17287288866.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121011022013 its reverse (310220110121), we get a palindrome (431231132134).

The spelling of 121011022013 in words is "one hundred twenty-one billion, eleven million, twenty-two thousand, thirteen".