1422517021 has 4 divisors (see below), whose sum is σ = 1442552544. Its totient is φ = 1402481500.

The previous prime is 1422517001. The next prime is 1422517049. The reversal of 1422517021 is 1207152241.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1207152241 = 61 ⋅19789381.

It is a cyclic number.

It is not a de Polignac number, because 1422517021 - 2⁹ = 1422516509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422517001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10017655 + ... + 10017796.

It is an arithmetic number, because the mean of its divisors is an integer number (360638136).

Almost surely, 2^1422517021 is an apocalyptic number.

It is an amenable number.

1422517021 is a deficient number, since it is larger than the sum of its proper divisors (20035523).

1422517021 is an equidigital number, since it uses as much as digits as its factorization.

1422517021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20035522.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1422517021 is about 37716.2699772923. The cubic root of 1422517021 is about 1124.6545826131.

Adding to 1422517021 its reverse (1207152241), we get a palindrome (2629669262).

The spelling of 1422517021 in words is "one billion, four hundred twenty-two million, five hundred seventeen thousand, twenty-one".