2122212201021 has 48 divisors (see below), whose sum is σ = 3360385199808. Its totient is φ = 1279936512000.

The previous prime is 2122212200989. The next prime is 2122212201023. The reversal of 2122212201021 is 1201022122212.

It is a happy number.

2122212201021 is a `hidden beast` number, since 212 + 221 + 220 + 10 + 2 + 1 = 666.

It is not a de Polignac number, because 2122212201021 - 2⁵ = 2122212200989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122212200985 and 2122212201003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122212201023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18364221 + ... + 18479421.

It is an arithmetic number, because the mean of its divisors is an integer number (70008024996).

Almost surely, 2^{2122212201021} is an apocalyptic number.

It is an amenable number.

2122212201021 is a deficient number, since it is larger than the sum of its proper divisors (1238172998787).

2122212201021 is a wasteful number, since it uses less digits than its factorization.

2122212201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116122 (or 116119 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2122212201021 its reverse (1201022122212), we get a palindrome (3323234323233).

The spelling of 2122212201021 in words is "two trillion, one hundred twenty-two billion, two hundred twelve million, two hundred one thousand, twenty-one".