1023023321220 has 48 divisors (see below), whose sum is σ = 2864761058880. Its totient is φ = 272778051456.

The previous prime is 1023023321209. The next prime is 1023023321231. The reversal of 1023023321220 is 221233203201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1023023321209) and next prime (1023023321231).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291027 + ... + 1459706.

It is an arithmetic number, because the mean of its divisors is an integer number (59682522060).

Almost surely, 2^{1023023321220} is an apocalyptic number.

1023023321220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023023321220 is an abundant number, since it is smaller than the sum of its proper divisors (1841737737660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023023321220 is a wasteful number, since it uses less digits than its factorization.

1023023321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760484 (or 1760482 counting only the distinct ones).

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

Adding to 1023023321220 its reverse (221233203201), we get a palindrome (1244256524421).

The spelling of 1023023321220 in words is "one trillion, twenty-three billion, twenty-three million, three hundred twenty-one thousand, two hundred twenty".