1210122320 has 80 divisors (see below), whose sum is σ = 3103997760. Its totient is φ = 435072000.

The previous prime is 1210122313. The next prime is 1210122323. The reversal of 1210122320 is 232210121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1210122295 and 1210122304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210122323) 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, 70595 + ... + 86045.

It is an arithmetic number, because the mean of its divisors is an integer number (38799972).

Almost surely, 2^1210122320 is an apocalyptic number.

1210122320 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 1210122320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1551998880).

1210122320 is an abundant number, since it is smaller than the sum of its proper divisors (1893875440).

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

1210122320 is a wasteful number, since it uses less digits than its factorization.

1210122320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15564 (or 15558 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1210122320 is about 34786.8124437983. The cubic root of 1210122320 is about 1065.6381431230.

Adding to 1210122320 its reverse (232210121), we get a palindrome (1442332441).

The spelling of 1210122320 in words is "one billion, two hundred ten million, one hundred twenty-two thousand, three hundred twenty".