121522500100 has 36 divisors (see below), whose sum is σ = 266168370384. Its totient is φ = 48154706080.

The previous prime is 121522500089. The next prime is 121522500107. The reversal of 121522500100 is 1005225121.

It is not an unprimeable number, because it can be changed into a prime (121522500107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5667922 + ... + 5689321.

It is an arithmetic number, because the mean of its divisors is an integer number (7393565844).

Almost surely, 2^121522500100 is an apocalyptic number.

121522500100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121522500100 is an abundant number, since it is smaller than the sum of its proper divisors (144645870284).

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

121522500100 is a wasteful number, since it uses less digits than its factorization.

121522500100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11357364 (or 11357357 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 121522500100 its reverse (1005225121), we get a palindrome (122527725221).

The spelling of 121522500100 in words is "one hundred twenty-one billion, five hundred twenty-two million, five hundred thousand, one hundred".