2001202000121 has 32 divisors (see below), whose sum is σ = 2287364728320. Its totient is φ = 1738911283200.

The previous prime is 2001202000103. The next prime is 2001202000129. The reversal of 2001202000121 is 1210002021002.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001202000121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001202000129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11981435 + ... + 12147311.

It is an arithmetic number, because the mean of its divisors is an integer number (71480147760).

Almost surely, 2^{2001202000121} is an apocalyptic number.

It is an amenable number.

2001202000121 is a deficient number, since it is larger than the sum of its proper divisors (286162728199).

2001202000121 is a wasteful number, since it uses less digits than its factorization.

2001202000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166865.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2001202000121 its reverse (1210002021002), we get a palindrome (3211204021123).

The spelling of 2001202000121 in words is "two trillion, one billion, two hundred two million, one hundred twenty-one", and thus it is an aban number.