1020421223 has 8 divisors (see below), whose sum is σ = 1034308800. Its totient is φ = 1006587648.

The previous prime is 1020421219. The next prime is 1020421247. The reversal of 1020421223 is 3221240201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020421223 - 2² = 1020421219 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 (1020421253) 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, 25298 + ... + 51776.

It is an arithmetic number, because the mean of its divisors is an integer number (129288600).

Almost surely, 2^1020421223 is an apocalyptic number.

1020421223 is a deficient number, since it is larger than the sum of its proper divisors (13887577).

1020421223 is an equidigital number, since it uses as much as digits as its factorization.

1020421223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27001.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1020421223 is about 31944.0326665247. The cubic root of 1020421223 is about 1006.7612567116.

Adding to 1020421223 its reverse (3221240201), we get a palindrome (4241661424).

The spelling of 1020421223 in words is "one billion, twenty million, four hundred twenty-one thousand, two hundred twenty-three".