22221000021037 has 2 divisors, whose sum is σ = 22221000021038. Its totient is φ = 22221000021036.

The previous prime is 22221000021019. The next prime is 22221000021061. The reversal of 22221000021037 is 73012000012222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16738522943076 + 5482477077961 = 4091274^2 + 2341469^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221000021037 - 2¹⁵ = 22220999988269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22221000020999 and 22221000021017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221000021097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110500010518 + 11110500010519.

It is an arithmetic number, because the mean of its divisors is an integer number (11110500010519).

Almost surely, 2^{22221000021037} is an apocalyptic number.

It is an amenable number.

22221000021037 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221000021037 is an equidigital number, since it uses as much as digits as its factorization.

22221000021037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 22221000021037 its reverse (73012000012222), we get a palindrome (95233000033259).

The spelling of 22221000021037 in words is "twenty-two trillion, two hundred twenty-one billion, twenty-one thousand, thirty-seven".