2002122212021 has 8 divisors (see below), whose sum is σ = 2090781806784. Its totient is φ = 1913596850880.

The previous prime is 2002122211919. The next prime is 2002122212033. The reversal of 2002122212021 is 1202122212002.

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 a de Polignac number, because none of the positive numbers 2^k-2002122212021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002122212921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33527915 + ... + 33587576.

It is an arithmetic number, because the mean of its divisors is an integer number (261347725848).

Almost surely, 2^{2002122212021} is an apocalyptic number.

It is an amenable number.

2002122212021 is a deficient number, since it is larger than the sum of its proper divisors (88659594763).

2002122212021 is a wasteful number, since it uses less digits than its factorization.

2002122212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67116811.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2002122212021 its reverse (1202122212002), we get a palindrome (3204244424023).

The spelling of 2002122212021 in words is "two trillion, two billion, one hundred twenty-two million, two hundred twelve thousand, twenty-one".