121013201100 has 108 divisors (see below), whose sum is σ = 384855431912. Its totient is φ = 29336524800.

The previous prime is 121013201083. The next prime is 121013201107. The reversal of 121013201100 is 1102310121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (121013201107) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 1630549 + ... + 1703148.

Almost surely, 2^121013201100 is an apocalyptic number.

121013201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121013201100 is an abundant number, since it is smaller than the sum of its proper divisors (263842230812).

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

121013201100 is a wasteful number, since it uses less digits than its factorization.

121013201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333736 (or 3333718 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 121013201100 its reverse (1102310121), we get a palindrome (122115511221).

The spelling of 121013201100 in words is "one hundred twenty-one billion, thirteen million, two hundred one thousand, one hundred".