121000011120100 has 144 divisors (see below), whose sum is σ = 329607353779200. Its totient is φ = 37593465275520.

The previous prime is 121000011120089. The next prime is 121000011120101. The reversal of 121000011120100 is 1021110000121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (121000011120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197471170 + ... + 198082969.

It is an arithmetic number, because the mean of its divisors is an integer number (2288939956800).

Almost surely, 2^{121000011120100} is an apocalyptic number.

121000011120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121000011120100 is an abundant number, since it is smaller than the sum of its proper divisors (208607342659100).

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

121000011120100 is a wasteful number, since it uses less digits than its factorization.

121000011120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395554202 (or 395554195 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121000011120100 its reverse (1021110000121), we get a palindrome (122021121120221).

The spelling of 121000011120100 in words is "one hundred twenty-one trillion, eleven million, one hundred twenty thousand, one hundred".