2123223122021 has 32 divisors (see below), whose sum is σ = 2195626245120. Its totient is φ = 2052159872256.

The previous prime is 2123223121949. The next prime is 2123223122077. The reversal of 2123223122021 is 1202213223212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2123223122021 - 2²² = 2123218927717 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 (2123223122921) 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 31 ways as a sum of consecutive naturals, for example, 949137515 + ... + 949139751.

It is an arithmetic number, because the mean of its divisors is an integer number (68613320160).

Almost surely, 2^{2123223122021} is an apocalyptic number.

It is an amenable number.

2123223122021 is a deficient number, since it is larger than the sum of its proper divisors (72403123099).

2123223122021 is a wasteful number, since it uses less digits than its factorization.

2123223122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2123223122021 its reverse (1202213223212), we get a palindrome (3325436345233).

The spelling of 2123223122021 in words is "two trillion, one hundred twenty-three billion, two hundred twenty-three million, one hundred twenty-two thousand, twenty-one".