121020222221100 has 108 divisors (see below), whose sum is σ = 388583142915240. Its totient is φ = 31484935852800.

The previous prime is 121020222221089. The next prime is 121020222221153. The reversal of 121020222221100 is 1122222020121.

It is a happy number.

121020222221100 is a `hidden beast` number, since 1 + 210 + 2 + 0 + 222 + 221 + 10 + 0 = 666.

121020222221100 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1639803510 + ... + 1639877309.

It is an arithmetic number, because the mean of its divisors is an integer number (3597992064030).

Almost surely, 2^{121020222221100} is an apocalyptic number.

121020222221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020222221100 is an abundant number, since it is smaller than the sum of its proper divisors (267562920694140).

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

121020222221100 is a wasteful number, since it uses less digits than its factorization.

121020222221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279680880 (or 3279680870 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121020222221100 its reverse (1122222020121), we get a palindrome (122142444241221).

The spelling of 121020222221100 in words is "one hundred twenty-one trillion, twenty billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred".