1023113212420 has 48 divisors (see below), whose sum is σ = 2318963396400. Its totient is φ = 376923488256.

The previous prime is 1023113212411. The next prime is 1023113212453. The reversal of 1023113212420 is 242123113201.

It can be written as a sum of positive squares in 8 ways, for example, as 11684745216 + 1011428467204 = 108096^2 + 1005698^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1023113212391 and 1023113212400.

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, 4265277 + ... + 4498756.

It is an arithmetic number, because the mean of its divisors is an integer number (48311737425).

Almost surely, 2^{1023113212420} is an apocalyptic number.

1023113212420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023113212420 is an abundant number, since it is smaller than the sum of its proper divisors (1295850183980).

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

1023113212420 is a wasteful number, since it uses less digits than its factorization.

1023113212420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8764504 (or 8764502 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1023113212420 its reverse (242123113201), we get a palindrome (1265236325621).

The spelling of 1023113212420 in words is "one trillion, twenty-three billion, one hundred thirteen million, two hundred twelve thousand, four hundred twenty".