20221021151 has 2 divisors, whose sum is σ = 20221021152. Its totient is φ = 20221021150.

The previous prime is 20221021103. The next prime is 20221021193. The reversal of 20221021151 is 15112012202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20221021151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221021351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110510575 + 10110510576.

It is an arithmetic number, because the mean of its divisors is an integer number (10110510576).

Almost surely, 2^20221021151 is an apocalyptic number.

20221021151 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221021151 is an equidigital number, since it uses as much as digits as its factorization.

20221021151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 20221021151 its reverse (15112012202), we get a palindrome (35333033353).

The spelling of 20221021151 in words is "twenty billion, two hundred twenty-one million, twenty-one thousand, one hundred fifty-one".