1222025401 has 2 divisors, whose sum is σ = 1222025402. Its totient is φ = 1222025400.

The previous prime is 1222025359. The next prime is 1222025417. The reversal of 1222025401 is 1045202221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 806844025 + 415181376 = 28405^2 + 20376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222025401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222065401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611012700 + 611012701.

It is an arithmetic number, because the mean of its divisors is an integer number (611012701).

Almost surely, 2^1222025401 is an apocalyptic number.

It is an amenable number.

1222025401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222025401 is an equidigital number, since it uses as much as digits as its factorization.

1222025401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1222025401 is about 34957.4799005878. The cubic root of 1222025401 is about 1069.1207150242.

Adding to 1222025401 its reverse (1045202221), we get a palindrome (2267227622).

The spelling of 1222025401 in words is "one billion, two hundred twenty-two million, twenty-five thousand, four hundred one".