22021151 has 2 divisors, whose sum is σ = 22021152. Its totient is φ = 22021150.

The previous prime is 22021123. The next prime is 22021159. The reversal of 22021151 is 15112022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22021151 - 2¹⁰ = 22020127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010575 + 11010576.

It is an arithmetic number, because the mean of its divisors is an integer number (11010576).

Almost surely, 2^22021151 is an apocalyptic number.

22021151 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021151 is an equidigital number, since it uses as much as digits as its factorization.

22021151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 22021151 is about 4692.6699223363. The cubic root of 22021151 is about 280.2937011732.

Adding to 22021151 its reverse (15112022), we get a palindrome (37133173).

The spelling of 22021151 in words is "twenty-two million, twenty-one thousand, one hundred fifty-one".