22020012220021 has 16 divisors (see below), whose sum is σ = 22894653196800. Its totient is φ = 21162684816000.

The previous prime is 22020012219941. The next prime is 22020012220079. The reversal of 22020012220021 is 12002221002022.

It is a cyclic number.

It is not a de Polignac number, because 22020012220021 - 2¹³ = 22020012211829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22020012219977 and 22020012220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020012220421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6321130 + ... + 9164971.

It is an arithmetic number, because the mean of its divisors is an integer number (1430915824800).

Almost surely, 2^{22020012220021} is an apocalyptic number.

It is an amenable number.

22020012220021 is a deficient number, since it is larger than the sum of its proper divisors (874640976779).

22020012220021 is a wasteful number, since it uses less digits than its factorization.

22020012220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15486660.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22020012220021 its reverse (12002221002022), we get a palindrome (34022233222043).

The spelling of 22020012220021 in words is "twenty-two trillion, twenty billion, twelve million, two hundred twenty thousand, twenty-one".