1301122000 has 80 divisors (see below), whose sum is σ = 3154155264. Its totient is φ = 519120000.

The previous prime is 1301121973. The next prime is 1301122001. The reversal of 1301122000 is 2211031.

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

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301122001) 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, 1261485 + ... + 1262515.

Almost surely, 2^1301122000 is an apocalyptic number.

1301122000 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 1301122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1577077632).

1301122000 is an abundant number, since it is smaller than the sum of its proper divisors (1853033264).

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

1301122000 is a wasteful number, since it uses less digits than its factorization.

1301122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685 (or 1669 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1301122000 is about 36071.0687393651. The cubic root of 1301122000 is about 1091.7067781104.

Adding to 1301122000 its reverse (2211031), we get a palindrome (1303333031).

The spelling of 1301122000 in words is "one billion, three hundred one million, one hundred twenty-two thousand".