121023120313 has 4 divisors (see below), whose sum is σ = 124927091968. Its totient is φ = 117119148660.

The previous prime is 121023120311. The next prime is 121023120371. The reversal of 121023120313 is 313021320121.

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: 313021320121 = 149 ⋅2100814229.

It is a cyclic number.

It is not a de Polignac number, because 121023120313 - 2¹ = 121023120311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121023120311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1951985781 + ... + 1951985842.

It is an arithmetic number, because the mean of its divisors is an integer number (31231772992).

Almost surely, 2^121023120313 is an apocalyptic number.

It is an amenable number.

121023120313 is a deficient number, since it is larger than the sum of its proper divisors (3903971655).

121023120313 is an equidigital number, since it uses as much as digits as its factorization.

121023120313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903971654.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121023120313 its reverse (313021320121), we get a palindrome (434044440434).

The spelling of 121023120313 in words is "one hundred twenty-one billion, twenty-three million, one hundred twenty thousand, three hundred thirteen".