1225421353229 has 2 divisors, whose sum is σ = 1225421353230. Its totient is φ = 1225421353228.

The previous prime is 1225421353183. The next prime is 1225421353231. The reversal of 1225421353229 is 9223531245221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1002942160900 + 222479192329 = 1001470^2 + 471677^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225421353229 - 2¹² = 1225421349133 is a prime.

Together with 1225421353231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225421353529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612710676614 + 612710676615.

It is an arithmetic number, because the mean of its divisors is an integer number (612710676615).

Almost surely, 2^{1225421353229} is an apocalyptic number.

It is an amenable number.

1225421353229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225421353229 is an equidigital number, since it uses as much as digits as its factorization.

1225421353229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 41.

The spelling of 1225421353229 in words is "one trillion, two hundred twenty-five billion, four hundred twenty-one million, three hundred fifty-three thousand, two hundred twenty-nine".