121120221001220 has 48 divisors (see below), whose sum is σ = 293510749179648. Its totient is φ = 41123758803840.

The previous prime is 121120221001181. The next prime is 121120221001229. The reversal of 121120221001220 is 22100122021121.

It is not an unprimeable number, because it can be changed into a prime (121120221001229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4199715851 + ... + 4199744690.

It is an arithmetic number, because the mean of its divisors is an integer number (6114807274576).

Almost surely, 2^{121120221001220} is an apocalyptic number.

121120221001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121120221001220 is an abundant number, since it is smaller than the sum of its proper divisors (172390528178428).

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

121120221001220 is a wasteful number, since it uses less digits than its factorization.

121120221001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8399460660 (or 8399460658 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121120221001220 its reverse (22100122021121), we get a palindrome (143220343022341).

The spelling of 121120221001220 in words is "one hundred twenty-one trillion, one hundred twenty billion, two hundred twenty-one million, one thousand, two hundred twenty".