121302232113 has 4 divisors (see below), whose sum is σ = 161736309488. Its totient is φ = 80868154740.

The previous prime is 121302232111. The next prime is 121302232127. The reversal of 121302232113 is 311232203121.

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 not a de Polignac number, because 121302232113 - 2¹ = 121302232111 is a prime.

It is a super-2 number, since 2×121302232113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121302232113.

It is not an unprimeable number, because it can be changed into a prime (121302232111) 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, 20217038683 + ... + 20217038688.

It is an arithmetic number, because the mean of its divisors is an integer number (40434077372).

Almost surely, 2^121302232113 is an apocalyptic number.

It is an amenable number.

121302232113 is a deficient number, since it is larger than the sum of its proper divisors (40434077375).

121302232113 is an equidigital number, since it uses as much as digits as its factorization.

121302232113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40434077374.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121302232113 its reverse (311232203121), we get a palindrome (432534435234).

The spelling of 121302232113 in words is "one hundred twenty-one billion, three hundred two million, two hundred thirty-two thousand, one hundred thirteen".