1210322123220 has 384 divisors, whose sum is σ = 4129342156800. Its totient is φ = 258721689600.

The previous prime is 1210322123209. The next prime is 1210322123237. The reversal of 1210322123220 is 223212230121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 668316115 + ... + 668317925.

It is an arithmetic number, because the mean of its divisors is an integer number (10753495200).

Almost surely, 2^{1210322123220} is an apocalyptic number.

1210322123220 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 1210322123220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2064671078400).

1210322123220 is an abundant number, since it is smaller than the sum of its proper divisors (2919020033580).

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

1210322123220 is a wasteful number, since it uses less digits than its factorization.

1210322123220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879 (or 2877 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1210322123220 its reverse (223212230121), we get a palindrome (1433534353341).

The spelling of 1210322123220 in words is "one trillion, two hundred ten billion, three hundred twenty-two million, one hundred twenty-three thousand, two hundred twenty".