121012012200100 has 72 divisors (see below), whose sum is σ = 310458403765440. Its totient is φ = 40059148859520.

The previous prime is 121012012200083. The next prime is 121012012200133. The reversal of 121012012200100 is 1002210210121.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2980571134 + ... + 2980611733.

It is an arithmetic number, because the mean of its divisors is an integer number (4311922274520).

Almost surely, 2^{121012012200100} is an apocalyptic number.

121012012200100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012012200100 is an abundant number, since it is smaller than the sum of its proper divisors (189446391565340).

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

121012012200100 is a wasteful number, since it uses less digits than its factorization.

121012012200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5961182917 (or 5961182910 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121012012200100 its reverse (1002210210121), we get a palindrome (122014222410221).

The spelling of 121012012200100 in words is "one hundred twenty-one trillion, twelve billion, twelve million, two hundred thousand, one hundred".