2002120100121 has 8 divisors (see below), whose sum is σ = 2676020347360. Its totient is φ = 1331483293152.

The previous prime is 2002120100087. The next prime is 2002120100159. The reversal of 2002120100121 is 1210010212002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2002120100121 - 2¹³ = 2002120091929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002120100097 and 2002120100106.

It is not an unprimeable number, because it can be changed into a prime (2002120100171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815858635 + ... + 815861088.

It is an arithmetic number, because the mean of its divisors is an integer number (334502543420).

Almost surely, 2^{2002120100121} is an apocalyptic number.

It is an amenable number.

2002120100121 is a deficient number, since it is larger than the sum of its proper divisors (673900247239).

2002120100121 is a wasteful number, since it uses less digits than its factorization.

2002120100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631720135.

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

Adding to 2002120100121 its reverse (1210010212002), we get a palindrome (3212130312123).

The spelling of 2002120100121 in words is "two trillion, two billion, one hundred twenty million, one hundred thousand, one hundred twenty-one".