1012213032320 has 128 divisors (see below), whose sum is σ = 2770229064960. Its totient is φ = 346452350976.

The previous prime is 1012213032317. The next prime is 1012213032329. The reversal of 1012213032320 is 232303122101.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1012213032292 and 1012213032301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012213032329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2437307 + ... + 2822213.

It is an arithmetic number, because the mean of its divisors is an integer number (21642414570).

Almost surely, 2^{1012213032320} is an apocalyptic number.

1012213032320 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 1012213032320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1385114532480).

1012213032320 is an abundant number, since it is smaller than the sum of its proper divisors (1758016032640).

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

1012213032320 is an equidigital number, since it uses as much as digits as its factorization.

1012213032320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385520 (or 385508 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1012213032320 its reverse (232303122101), we get a palindrome (1244516154421).

The spelling of 1012213032320 in words is "one trillion, twelve billion, two hundred thirteen million, thirty-two thousand, three hundred twenty".