121313222020 has 12 divisors (see below), whose sum is σ = 254757766284. Its totient is φ = 48525288800.

The previous prime is 121313221987. The next prime is 121313222021. The reversal of 121313222020 is 20222313121.

It can be written as a sum of positive squares in 2 ways, for example, as 64482476356 + 56830745664 = 253934^2 + 238392^2 .

It is not an unprimeable number, because it can be changed into a prime (121313222021) 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, 3032830531 + ... + 3032830570.

It is an arithmetic number, because the mean of its divisors is an integer number (21229813857).

Almost surely, 2^121313222020 is an apocalyptic number.

121313222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121313222020 is an abundant number, since it is smaller than the sum of its proper divisors (133444544264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121313222020 is a wasteful number, since it uses less digits than its factorization.

121313222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6065661110 (or 6065661108 counting only the distinct ones).

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

Adding to 121313222020 its reverse (20222313121), we get a palindrome (141535535141).

The spelling of 121313222020 in words is "one hundred twenty-one billion, three hundred thirteen million, two hundred twenty-two thousand, twenty".