22021203829 has 2 divisors, whose sum is σ = 22021203830. Its totient is φ = 22021203828.

The previous prime is 22021203823. The next prime is 22021203833. The reversal of 22021203829 is 92830212022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14948730225 + 7072473604 = 122265^2 + 84098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021203829 is a prime.

It is a super-2 number, since 2×22021203829² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22021203829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021203823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010601914 + 11010601915.

It is an arithmetic number, because the mean of its divisors is an integer number (11010601915).

Almost surely, 2^22021203829 is an apocalyptic number.

It is an amenable number.

22021203829 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021203829 is an equidigital number, since it uses as much as digits as its factorization.

22021203829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 22021203829 in words is "twenty-two billion, twenty-one million, two hundred three thousand, eight hundred twenty-nine".