1020421450223 has 16 divisors (see below), whose sum is σ = 1227602976000. Its totient is φ = 828593805312.

The previous prime is 1020421450199. The next prime is 1020421450291. The reversal of 1020421450223 is 3220541240201.

It is not a de Polignac number, because 1020421450223 - 2²⁸ = 1020153014767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020421450192 and 1020421450201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020421450123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10092143 + ... + 10192751.

It is an arithmetic number, because the mean of its divisors is an integer number (76725186000).

Almost surely, 2^{1020421450223} is an apocalyptic number.

1020421450223 is a deficient number, since it is larger than the sum of its proper divisors (207181525777).

1020421450223 is a wasteful number, since it uses less digits than its factorization.

1020421450223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176894.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 1020421450223 its reverse (3220541240201), we get a palindrome (4240962690424).

The spelling of 1020421450223 in words is "one trillion, twenty billion, four hundred twenty-one million, four hundred fifty thousand, two hundred twenty-three".