121011001000100 has 72 divisors (see below), whose sum is σ = 264865922162688. Its totient is φ = 47987390707200.

The previous prime is 121011001000049. The next prime is 121011001000157. The reversal of 121011001000100 is 1000100110121.

It is a happy number.

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, 5884004 + ... + 16632603.

Almost surely, 2^{121011001000100} is an apocalyptic number.

121011001000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011001000100 is an abundant number, since it is smaller than the sum of its proper divisors (143854921162588).

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

121011001000100 is a wasteful number, since it uses less digits than its factorization.

121011001000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22517085 (or 22517078 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 121011001000100 its reverse (1000100110121), we get a palindrome (122011101110221).

The spelling of 121011001000100 in words is "one hundred twenty-one trillion, eleven billion, one million, one hundred", and thus it is an aban number.