1021310021120 has 160 divisors (see below), whose sum is σ = 2511189952128. Its totient is φ = 398148968448.

The previous prime is 1021310021101. The next prime is 1021310021141. The reversal of 1021310021120 is 211200131201.

It is a tau number, because it is divible by the number of its divisors (160).

It is a junction number, because it is equal to n+sod(n) for n = 1021310021095 and 1021310021104.

It is a congruent number.

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, 51397427 + ... + 51417293.

Almost surely, 2^{1021310021120} is an apocalyptic number.

1021310021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021310021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1255594976064).

1021310021120 is an abundant number, since it is smaller than the sum of its proper divisors (1489879931008).

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

1021310021120 is an equidigital number, since it uses as much as digits as its factorization.

1021310021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20400 (or 20384 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1021310021120 its reverse (211200131201), we get a palindrome (1232510152321).

The spelling of 1021310021120 in words is "one trillion, twenty-one billion, three hundred ten million, twenty-one thousand, one hundred twenty".