1202020100121 has 32 divisors (see below), whose sum is σ = 1743664969728. Its totient is φ = 733474621440.

The previous prime is 1202020100117. The next prime is 1202020100129. The reversal of 1202020100121 is 1210010202021.

It is not a de Polignac number, because 1202020100121 - 2² = 1202020100117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202020100097 and 1202020100106.

It is not an unprimeable number, because it can be changed into a prime (1202020100129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3832581 + ... + 4134333.

It is an arithmetic number, because the mean of its divisors is an integer number (54489530304).

Almost surely, 2^{1202020100121} is an apocalyptic number.

It is an amenable number.

1202020100121 is a deficient number, since it is larger than the sum of its proper divisors (541644869607).

1202020100121 is a wasteful number, since it uses less digits than its factorization.

1202020100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303921.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1202020100121 its reverse (1210010202021), we get a palindrome (2412030302142).

The spelling of 1202020100121 in words is "one trillion, two hundred two billion, twenty million, one hundred thousand, one hundred twenty-one".