1020121021120 has 28 divisors (see below), whose sum is σ = 2429163182304. Its totient is φ = 408048408320.

The previous prime is 1020121021109. The next prime is 1020121021151. The reversal of 1020121021120 is 211201210201.

It is a super-2 number, since 2×1020121021120² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1020121021120.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1593938776 + ... + 1593939415.

Almost surely, 2^{1020121021120} is an apocalyptic number.

1020121021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020121021120 is an abundant number, since it is smaller than the sum of its proper divisors (1409042161184).

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

1020121021120 is an equidigital number, since it uses as much as digits as its factorization.

1020121021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187878208 (or 3187878198 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020121021120 its reverse (211201210201), we get a palindrome (1231322231321).

The spelling of 1020121021120 in words is "one trillion, twenty billion, one hundred twenty-one million, twenty-one thousand, one hundred twenty".