20221283817629 has 2 divisors, whose sum is σ = 20221283817630. Its totient is φ = 20221283817628.

The previous prime is 20221283817601. The next prime is 20221283817667. The reversal of 20221283817629 is 92671838212202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11921641389529 + 8299642428100 = 3452773^2 + 2880910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20221283817629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221283817529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110641908814 + 10110641908815.

It is an arithmetic number, because the mean of its divisors is an integer number (10110641908815).

Almost surely, 2^{20221283817629} is an apocalyptic number.

It is an amenable number.

20221283817629 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221283817629 is an equidigital number, since it uses as much as digits as its factorization.

20221283817629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 20221283817629 in words is "twenty trillion, two hundred twenty-one billion, two hundred eighty-three million, eight hundred seventeen thousand, six hundred twenty-nine".