133222451 has 2 divisors, whose sum is σ = 133222452. Its totient is φ = 133222450.

The previous prime is 133222447. The next prime is 133222477. The reversal of 133222451 is 154222331.

It is a weak prime.

It is an emirp because it is prime and its reverse (154222331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133222451 - 2² = 133222447 is a prime.

It is equal to p_7550501 and since 133222451 and 7550501 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (133222051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66611225 + 66611226.

It is an arithmetic number, because the mean of its divisors is an integer number (66611226).

Almost surely, 2^133222451 is an apocalyptic number.

133222451 is a deficient number, since it is larger than the sum of its proper divisors (1).

133222451 is an equidigital number, since it uses as much as digits as its factorization.

133222451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 133222451 is about 11542.2030392815. The cubic root of 133222451 is about 510.7312986906.

Adding to 133222451 its reverse (154222331), we get a palindrome (287444782).

The spelling of 133222451 in words is "one hundred thirty-three million, two hundred twenty-two thousand, four hundred fifty-one".