1422232421 has 2 divisors, whose sum is σ = 1422232422. Its totient is φ = 1422232420.

The previous prime is 1422232417. The next prime is 1422232429. The reversal of 1422232421 is 1242322241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 943104100 + 479128321 = 30710^2 + 21889^2 .

It is a cyclic number.

It is not a de Polignac number, because 1422232421 - 2² = 1422232417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1422232429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711116210 + 711116211.

It is an arithmetic number, because the mean of its divisors is an integer number (711116211).

Almost surely, 2^1422232421 is an apocalyptic number.

It is an amenable number.

1422232421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422232421 is an equidigital number, since it uses as much as digits as its factorization.

1422232421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 23.

The square root of 1422232421 is about 37712.4968810075. The cubic root of 1422232421 is about 1124.5795751820.

Adding to 1422232421 its reverse (1242322241), we get a palindrome (2664554662).

The spelling of 1422232421 in words is "one billion, four hundred twenty-two million, two hundred thirty-two thousand, four hundred twenty-one".