121313113202 has 4 divisors (see below), whose sum is σ = 181969669806. Its totient is φ = 60656556600.

The previous prime is 121313113189. The next prime is 121313113217. The reversal of 121313113202 is 202311313121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 116390827921 + 4922285281 = 341161^2 + 70159^2 .

It is a super-2 number, since 2×121313113202² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30328278299 + ... + 30328278302.

Almost surely, 2^121313113202 is an apocalyptic number.

121313113202 is a deficient number, since it is larger than the sum of its proper divisors (60656556604).

121313113202 is an equidigital number, since it uses as much as digits as its factorization.

121313113202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60656556603.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121313113202 its reverse (202311313121), we get a palindrome (323624426323).

The spelling of 121313113202 in words is "one hundred twenty-one billion, three hundred thirteen million, one hundred thirteen thousand, two hundred two".