1122420621 has 8 divisors (see below), whose sum is σ = 1710355264. Its totient is φ = 641383200.

The previous prime is 1122420589. The next prime is 1122420623. The reversal of 1122420621 is 1260242211.

1122420621 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1122420621 - 2⁵ = 1122420589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 53448601 = 1122420621 / (1 + 1 + 2 + 2 + 4 + 2 + 0 + 6 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122420623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26724280 + ... + 26724321.

It is an arithmetic number, because the mean of its divisors is an integer number (213794408).

Almost surely, 2^1122420621 is an apocalyptic number.

It is an amenable number.

1122420621 is a deficient number, since it is larger than the sum of its proper divisors (587934643).

1122420621 is an equidigital number, since it uses as much as digits as its factorization.

1122420621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53448611.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1122420621 is about 33502.5464853047. The cubic root of 1122420621 is about 1039.2464403752.

Adding to 1122420621 its reverse (1260242211), we get a palindrome (2382662832).

The spelling of 1122420621 in words is "one billion, one hundred twenty-two million, four hundred twenty thousand, six hundred twenty-one".