1202021000121 has 16 divisors (see below), whose sum is σ = 1656203947200. Its totient is φ = 774961723200.

The previous prime is 1202021000113. The next prime is 1202021000149. The reversal of 1202021000121 is 1210001202021.

It is not a de Polignac number, because 1202021000121 - 2³ = 1202021000113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202021000097 and 1202021000106.

It is not an unprimeable number, because it can be changed into a prime (1202021000171) 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, 46115646 + ... + 46141703.

It is an arithmetic number, because the mean of its divisors is an integer number (103512746700).

Almost surely, 2^{1202021000121} is an apocalyptic number.

It is an amenable number.

1202021000121 is a deficient number, since it is larger than the sum of its proper divisors (454182947079).

1202021000121 is a wasteful number, since it uses less digits than its factorization.

1202021000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92257496.

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

Adding to 1202021000121 its reverse (1210001202021), we get a palindrome (2412022202142).

The spelling of 1202021000121 in words is "one trillion, two hundred two billion, twenty-one million, one hundred twenty-one", and thus it is an aban number.