1210012123320 has 1536 divisors, whose sum is σ = 5467751976960. Its totient is φ = 223948800000.

The previous prime is 1210012123219. The next prime is 1210012123321. The reversal of 1210012123320 is 233212100121.

1210012123320 is a `hidden beast` number, since 1 + 210 + 0 + 12 + 123 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1210012123293 and 1210012123302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210012123321) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2013331020 + ... + 2013331620.

It is an arithmetic number, because the mean of its divisors is an integer number (3559734360).

Almost surely, 2^{1210012123320} is an apocalyptic number.

1210012123320 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 1210012123320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2733875988480).

1210012123320 is an abundant number, since it is smaller than the sum of its proper divisors (4257739853640).

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

1210012123320 is a wasteful number, since it uses less digits than its factorization.

1210012123320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1210012123320 its reverse (233212100121), we get a palindrome (1443224223441).

The spelling of 1210012123320 in words is "one trillion, two hundred ten billion, twelve million, one hundred twenty-three thousand, three hundred twenty".