121020202200100 has 54 divisors (see below), whose sum is σ = 305489567566050. Its totient is φ = 41492640752640.

The previous prime is 121020202200077. The next prime is 121020202200101. The reversal of 121020202200100 is 1002202020121.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 41548647038976 + 79471555161124 = 6445824^2 + 8914682^2 .

It is not an unprimeable number, because it can be changed into a prime (121020202200101) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12348995325 + ... + 12349005124.

Almost surely, 2^{121020202200100} is an apocalyptic number.

121020202200100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020202200100 is an abundant number, since it is smaller than the sum of its proper divisors (184469365365950).

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

121020202200100 is a wasteful number, since it uses less digits than its factorization.

121020202200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24698000477 (or 24698000463 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121020202200100 its reverse (1002202020121), we get a palindrome (122022404220221).

The spelling of 121020202200100 in words is "one hundred twenty-one trillion, twenty billion, two hundred two million, two hundred thousand, one hundred".