22021321323021 has 8 divisors (see below), whose sum is σ = 29466252020544. Its totient is φ = 14628635753760.

The previous prime is 22021321322939. The next prime is 22021321323031. The reversal of 22021321323021 is 12032312312022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22021321323021 - 2¹⁰ = 22021321321997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22021321322982 and 22021321323000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021321323031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13061281081 + ... + 13061282766.

It is an arithmetic number, because the mean of its divisors is an integer number (3683281502568).

Almost surely, 2^{22021321323021} is an apocalyptic number.

It is an amenable number.

22021321323021 is a deficient number, since it is larger than the sum of its proper divisors (7444930697523).

22021321323021 is a wasteful number, since it uses less digits than its factorization.

22021321323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26122564131.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 22021321323021 its reverse (12032312312022), we get a palindrome (34053633635043).

The spelling of 22021321323021 in words is "twenty-two trillion, twenty-one billion, three hundred twenty-one million, three hundred twenty-three thousand, twenty-one".