22012211222021 has 8 divisors (see below), whose sum is σ = 23096165898624. Its totient is φ = 20938831713360.

The previous prime is 22012211221991. The next prime is 22012211222069. The reversal of 22012211222021 is 12022211221022.

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-22012211222021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22012211221984 and 22012211222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012211222081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2643787721 + ... + 2643796046.

It is an arithmetic number, because the mean of its divisors is an integer number (2887020737328).

Almost surely, 2^{22012211222021} is an apocalyptic number.

It is an amenable number.

22012211222021 is a deficient number, since it is larger than the sum of its proper divisors (1083954676603).

22012211222021 is a wasteful number, since it uses less digits than its factorization.

22012211222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5287583971.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22012211222021 its reverse (12022211221022), we get a palindrome (34034422443043).

Subtracting from 22012211222021 its reverse (12022211221022), we obtain a palindrome (9990000000999).

The spelling of 22012211222021 in words is "twenty-two trillion, twelve billion, two hundred eleven million, two hundred twenty-two thousand, twenty-one".