1023223320021 has 8 divisors (see below), whose sum is σ = 1559197440064. Its totient is φ = 584699040000.

The previous prime is 1023223320019. The next prime is 1023223320101. The reversal of 1023223320021 is 1200233223201.

It is a happy number.

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

It is not a de Polignac number, because 1023223320021 - 2¹ = 1023223320019 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: 48724920001 = 1023223320021 / (1 + 0 + 2 + 3 + 2 + 2 + 3 + 3 + 2 + 0 + 0 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023223320021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023223322021) 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, 24362459980 + ... + 24362460021.

It is an arithmetic number, because the mean of its divisors is an integer number (194899680008).

Almost surely, 2^{1023223320021} is an apocalyptic number.

It is an amenable number.

1023223320021 is a deficient number, since it is larger than the sum of its proper divisors (535974120043).

1023223320021 is an equidigital number, since it uses as much as digits as its factorization.

1023223320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48724920011.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1023223320021 its reverse (1200233223201), we get a palindrome (2223456543222).

The spelling of 1023223320021 in words is "one trillion, twenty-three billion, two hundred twenty-three million, three hundred twenty thousand, twenty-one".