2002120121021 has 8 divisors (see below), whose sum is σ = 2056077026784. Its totient is φ = 1948499395920.

The previous prime is 2002120120963. The next prime is 2002120121041. The reversal of 2002120121021 is 1201210212002.

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

It is not a de Polignac number, because 2002120121021 - 2¹⁰ = 2002120119997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002120120987 and 2002120121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002120121041) 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, 84033095 + ... + 84056916.

It is an arithmetic number, because the mean of its divisors is an integer number (257009628348).

Almost surely, 2^{2002120121021} is an apocalyptic number.

It is an amenable number.

2002120121021 is a deficient number, since it is larger than the sum of its proper divisors (53956905763).

2002120121021 is a wasteful number, since it uses less digits than its factorization.

2002120121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168090331.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2002120121021 its reverse (1201210212002), we get a palindrome (3203330333023).

It can be divided in two parts, 2002 and 120121021, that multiplied together give a palindrome (240482284042).

The spelling of 2002120121021 in words is "two trillion, two billion, one hundred twenty million, one hundred twenty-one thousand, twenty-one".