121311300220 has 48 divisors (see below), whose sum is σ = 277944357600. Its totient is φ = 44108248320.

The previous prime is 121311300199. The next prime is 121311300233. The reversal of 121311300220 is 22003113121.

It is a super-2 number, since 2×121311300220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121311300194 and 121311300203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2348026 + ... + 2399134.

It is an arithmetic number, because the mean of its divisors is an integer number (5790507450).

Almost surely, 2^121311300220 is an apocalyptic number.

121311300220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121311300220 is an abundant number, since it is smaller than the sum of its proper divisors (156633057380).

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

121311300220 is a wasteful number, since it uses less digits than its factorization.

121311300220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61918 (or 61916 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121311300220 its reverse (22003113121), we get a palindrome (143314413341).

The spelling of 121311300220 in words is "one hundred twenty-one billion, three hundred eleven million, three hundred thousand, two hundred twenty".