1210021040320 has 112 divisors (see below), whose sum is σ = 2975774531040. Its totient is φ = 468295409664.

The previous prime is 1210021040303. The next prime is 1210021040407. The reversal of 1210021040320 is 230401200121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1210021040294 and 1210021040303.

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, 1833892 + ... + 2404828.

Almost surely, 2^{1210021040320} is an apocalyptic number.

1210021040320 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 1210021040320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1487887265520).

1210021040320 is an abundant number, since it is smaller than the sum of its proper divisors (1765753490720).

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

1210021040320 is a wasteful number, since it uses less digits than its factorization.

1210021040320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571170 (or 571160 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1210021040320 its reverse (230401200121), we get a palindrome (1440422240441).

The spelling of 1210021040320 in words is "one trillion, two hundred ten billion, twenty-one million, forty thousand, three hundred twenty".