20222224433021 has 4 divisors (see below), whose sum is σ = 21777780158652. Its totient is φ = 18666668707392.

The previous prime is 20222224432987. The next prime is 20222224433083. The reversal of 20222224433021 is 12033442222202.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2489408661796 + 17732815771225 = 1577786^2 + 4211035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20222224433021 is a prime.

It is a super-2 number, since 2×20222224433021² (a number of 27 digits) contains 22 as substring.

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 (20222224433221) 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, 777777862796 + ... + 777777862821.

It is an arithmetic number, because the mean of its divisors is an integer number (5444445039663).

Almost surely, 2^{20222224433021} is an apocalyptic number.

It is an amenable number.

20222224433021 is a deficient number, since it is larger than the sum of its proper divisors (1555555725631).

20222224433021 is a wasteful number, since it uses less digits than its factorization.

20222224433021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555555725630.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 20222224433021 its reverse (12033442222202), we get a palindrome (32255666655223).

The spelling of 20222224433021 in words is "twenty trillion, two hundred twenty-two billion, two hundred twenty-four million, four hundred thirty-three thousand, twenty-one".