1020123313320 has 128 divisors (see below), whose sum is σ = 3171919766400. Its totient is φ = 262252256256.

The previous prime is 1020123313303. The next prime is 1020123313337. The reversal of 1020123313320 is 233133210201.

It is an interprime number because it is at equal distance from previous prime (1020123313303) and next prime (1020123313337).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 569974 + ... + 1537893.

It is an arithmetic number, because the mean of its divisors is an integer number (24780623175).

Almost surely, 2^{1020123313320} is an apocalyptic number.

1020123313320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020123313320 is an abundant number, since it is smaller than the sum of its proper divisors (2151796453080).

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

1020123313320 is a wasteful number, since it uses less digits than its factorization.

1020123313320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108027 (or 2108023 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1020123313320 its reverse (233133210201), we get a palindrome (1253256523521).

The spelling of 1020123313320 in words is "one trillion, twenty billion, one hundred twenty-three million, three hundred thirteen thousand, three hundred twenty".