2021222112023 has 4 divisors (see below), whose sum is σ = 2021362032480. Its totient is φ = 2021082191568.

The previous prime is 2021222111977. The next prime is 2021222112031. The reversal of 2021222112023 is 3202112221202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021222112023 is a prime.

It is a super-2 number, since 2×2021222112023² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021222111986 and 2021222112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021222112523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69938558 + ... + 69967451.

It is an arithmetic number, because the mean of its divisors is an integer number (505340508120).

Almost surely, 2^{2021222112023} is an apocalyptic number.

2021222112023 is a deficient number, since it is larger than the sum of its proper divisors (139920457).

2021222112023 is a wasteful number, since it uses less digits than its factorization.

2021222112023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139920456.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2021222112023 its reverse (3202112221202), we get a palindrome (5223334333225).

The spelling of 2021222112023 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, twenty-three".