1122621421 has 4 divisors (see below), whose sum is σ = 1171431072. Its totient is φ = 1073811772.

The previous prime is 1122621391. The next prime is 1122621431. The reversal of 1122621421 is 1241262211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1122621421 - 2⁷ = 1122621293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122621392 and 1122621401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122621431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24404791 + ... + 24404836.

It is an arithmetic number, because the mean of its divisors is an integer number (292857768).

Almost surely, 2^1122621421 is an apocalyptic number.

It is an amenable number.

1122621421 is a deficient number, since it is larger than the sum of its proper divisors (48809651).

1122621421 is an equidigital number, since it uses as much as digits as its factorization.

1122621421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48809650.

The product of its digits is 384, while the sum is 22.

The square root of 1122621421 is about 33505.5431384122. The cubic root of 1122621421 is about 1039.3084100855.

Adding to 1122621421 its reverse (1241262211), we get a palindrome (2363883632).

The spelling of 1122621421 in words is "one billion, one hundred twenty-two million, six hundred twenty-one thousand, four hundred twenty-one".