1200020122320 has 160 divisors (see below), whose sum is σ = 3963056740992. Its totient is φ = 299333615616.

The previous prime is 1200020122309. The next prime is 1200020122331. The reversal of 1200020122320 is 232210200021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1200020122309) and next prime (1200020122331).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1200020122320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237177 + ... + 1567256.

Almost surely, 2^{1200020122320} is an apocalyptic number.

1200020122320 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 1200020122320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1981528370496).

1200020122320 is an abundant number, since it is smaller than the sum of its proper divisors (2763036618672).

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

1200020122320 is a wasteful number, since it uses less digits than its factorization.

1200020122320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804629 (or 1804623 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 1200020122320 its reverse (232210200021), we get a palindrome (1432230322341).

The spelling of 1200020122320 in words is "one trillion, two hundred billion, twenty million, one hundred twenty-two thousand, three hundred twenty".