121021011201100 has 36 divisors (see below), whose sum is σ = 274033663629264. Its totient is φ = 46303691241280.

The previous prime is 121021011201073. The next prime is 121021011201113. The reversal of 121021011201100 is 1102110120121.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26308913179 + ... + 26308917778.

It is an arithmetic number, because the mean of its divisors is an integer number (7612046211924).

Almost surely, 2^{121021011201100} is an apocalyptic number.

121021011201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021011201100 is an abundant number, since it is smaller than the sum of its proper divisors (153012652428164).

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

121021011201100 is a wasteful number, since it uses less digits than its factorization.

121021011201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52617830994 (or 52617830987 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121021011201100 its reverse (1102110120121), we get a palindrome (122123121321221).

The spelling of 121021011201100 in words is "one hundred twenty-one trillion, twenty-one billion, eleven million, two hundred one thousand, one hundred".