121200110222020 has 96 divisors (see below), whose sum is σ = 272315978161920. Its totient is φ = 45174230115840.

The previous prime is 121200110222017. The next prime is 121200110222027. The reversal of 121200110222020 is 20222011002121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121200110221985 and 121200110222003.

It is not an unprimeable number, because it can be changed into a prime (121200110222027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1238620737 + ... + 1238718583.

It is an arithmetic number, because the mean of its divisors is an integer number (2836624772520).

Almost surely, 2^{121200110222020} is an apocalyptic number.

121200110222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121200110222020 is an abundant number, since it is smaller than the sum of its proper divisors (151115867939900).

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

121200110222020 is a wasteful number, since it uses less digits than its factorization.

121200110222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151373 (or 151371 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121200110222020 its reverse (20222011002121), we get a palindrome (141422121224141).

The spelling of 121200110222020 in words is "one hundred twenty-one trillion, two hundred billion, one hundred ten million, two hundred twenty-two thousand, twenty".