1203222421 has 2 divisors, whose sum is σ = 1203222422. Its totient is φ = 1203222420.

The previous prime is 1203222331. The next prime is 1203222451. The reversal of 1203222421 is 1242223021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1191216196 + 12006225 = 34514^2 + 3465^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203222421 - 2¹⁵ = 1203189653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203222451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601611210 + 601611211.

It is an arithmetic number, because the mean of its divisors is an integer number (601611211).

Almost surely, 2^1203222421 is an apocalyptic number.

It is an amenable number.

1203222421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203222421 is an equidigital number, since it uses as much as digits as its factorization.

1203222421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1203222421 is about 34687.4966090088. The cubic root of 1203222421 is about 1063.6089227035.

Adding to 1203222421 its reverse (1242223021), we get a palindrome (2445445442).

It can be divided in two parts, 12032 and 22421, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 1203222421 in words is "one billion, two hundred three million, two hundred twenty-two thousand, four hundred twenty-one".