2002012212121 has 8 divisors (see below), whose sum is σ = 2007931213440. Its totient is φ = 1996094070768.

The previous prime is 2002012212107. The next prime is 2002012212133. The reversal of 2002012212121 is 1212122102002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2002012212121 - 2⁹ = 2002012211609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002012212095 and 2002012212104.

It is not an unprimeable number, because it can be changed into a prime (2002012212821) 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, 4607440 + ... + 5023198.

It is an arithmetic number, because the mean of its divisors is an integer number (250991401680).

Almost surely, 2^{2002012212121} is an apocalyptic number.

It is an amenable number.

2002012212121 is a deficient number, since it is larger than the sum of its proper divisors (5919001319).

2002012212121 is a wasteful number, since it uses less digits than its factorization.

2002012212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429983.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2002012212121 its reverse (1212122102002), we get a palindrome (3214134314123).

The spelling of 2002012212121 in words is "two trillion, two billion, twelve million, two hundred twelve thousand, one hundred twenty-one".