121020222313 has 4 divisors (see below), whose sum is σ = 123303622788. Its totient is φ = 118736821840.

The previous prime is 121020222287. The next prime is 121020222341. The reversal of 121020222313 is 313222020121.

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 59698614889 + 61321607424 = 244333^2 + 247632^2 .

It is a cyclic number.

It is not a de Polignac number, because 121020222313 - 2⁹ = 121020221801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121020222373) 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, 1141700158 + ... + 1141700263.

It is an arithmetic number, because the mean of its divisors is an integer number (30825905697).

Almost surely, 2^121020222313 is an apocalyptic number.

It is an amenable number.

121020222313 is a deficient number, since it is larger than the sum of its proper divisors (2283400475).

121020222313 is an equidigital number, since it uses as much as digits as its factorization.

121020222313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283400474.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121020222313 its reverse (313222020121), we get a palindrome (434242242434).

The spelling of 121020222313 in words is "one hundred twenty-one billion, twenty million, two hundred twenty-two thousand, three hundred thirteen".