1212200121320 has 32 divisors (see below), whose sum is σ = 2815432542720. Its totient is φ = 469238756160.

The previous prime is 1212200121283. The next prime is 1212200121373. The reversal of 1212200121320 is 231210022121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488789132 + ... + 488791611.

It is an arithmetic number, because the mean of its divisors is an integer number (87982266960).

Almost surely, 2^{1212200121320} is an apocalyptic number.

1212200121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212200121320 is an abundant number, since it is smaller than the sum of its proper divisors (1603232421400).

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

1212200121320 is a wasteful number, since it uses less digits than its factorization.

1212200121320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977580785 (or 977580781 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1212200121320 its reverse (231210022121), we get a palindrome (1443410143441).

The spelling of 1212200121320 in words is "one trillion, two hundred twelve billion, two hundred million, one hundred twenty-one thousand, three hundred twenty".