1202002100121 has 16 divisors (see below), whose sum is σ = 1633240832960. Its totient is φ = 786118374720.

The previous prime is 1202002100111. The next prime is 1202002100179. The reversal of 1202002100121 is 1210012002021.

It is not a de Polignac number, because 1202002100121 - 2³⁰ = 1200928358297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202002100097 and 1202002100106.

It is not an unprimeable number, because it can be changed into a prime (1202002100111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8595970 + ... + 8734683.

It is an arithmetic number, because the mean of its divisors is an integer number (102077552060).

Almost surely, 2^{1202002100121} is an apocalyptic number.

It is an amenable number.

1202002100121 is a deficient number, since it is larger than the sum of its proper divisors (431238732839).

1202002100121 is a wasteful number, since it uses less digits than its factorization.

1202002100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17331096.

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

Adding to 1202002100121 its reverse (1210012002021), we get a palindrome (2412014102142).

The spelling of 1202002100121 in words is "one trillion, two hundred two billion, two million, one hundred thousand, one hundred twenty-one".