2122020002221 has 16 divisors (see below), whose sum is σ = 2679466984704. Its totient is φ = 1637452041984.

The previous prime is 2122020002173. The next prime is 2122020002239. The reversal of 2122020002221 is 1222000202212.

It is not a de Polignac number, because 2122020002221 - 2¹⁵ = 2122019969453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122020002195 and 2122020002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122020032221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387651630 + ... + 387657103.

It is an arithmetic number, because the mean of its divisors is an integer number (167466686544).

Almost surely, 2^{2122020002221} is an apocalyptic number.

It is an amenable number.

2122020002221 is a deficient number, since it is larger than the sum of its proper divisors (557446982483).

2122020002221 is a wasteful number, since it uses less digits than its factorization.

2122020002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775308780.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2122020002221 its reverse (1222000202212), we get a palindrome (3344020204433).

The spelling of 2122020002221 in words is "two trillion, one hundred twenty-two billion, twenty million, two thousand, two hundred twenty-one".