2002010001121 has 4 divisors (see below), whose sum is σ = 2156010770452. Its totient is φ = 1848009231792.

The previous prime is 2002010001097. The next prime is 2002010001127. The reversal of 2002010001121 is 1211000102002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 155914419600 + 1846095581521 = 394860^2 + 1358711^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002010001121 - 2¹³ = 2002009992929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002010001098 and 2002010001107.

It is not an unprimeable number, because it can be changed into a prime (2002010001127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77000384646 + ... + 77000384671.

It is an arithmetic number, because the mean of its divisors is an integer number (539002692613).

Almost surely, 2^{2002010001121} is an apocalyptic number.

It is an amenable number.

2002010001121 is a deficient number, since it is larger than the sum of its proper divisors (154000769331).

2002010001121 is a wasteful number, since it uses less digits than its factorization.

2002010001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154000769330.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2002010001121 its reverse (1211000102002), we get a palindrome (3213010103123).

The spelling of 2002010001121 in words is "two trillion, two billion, ten million, one thousand, one hundred twenty-one".