1212020200340 has 96 divisors (see below), whose sum is σ = 2730841344000. Its totient is φ = 450475108992.

The previous prime is 1212020200331. The next prime is 1212020200361. The reversal of 1212020200340 is 430020202121.

It is a super-2 number, since 2×1212020200340² (a number of 25 digits) contains 22 as substring.

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, 9780809 + ... + 9903951.

It is an arithmetic number, because the mean of its divisors is an integer number (28446264000).

Almost surely, 2^{1212020200340} is an apocalyptic number.

1212020200340 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 1212020200340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1365420672000).

1212020200340 is an abundant number, since it is smaller than the sum of its proper divisors (1518821143660).

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

1212020200340 is a wasteful number, since it uses less digits than its factorization.

1212020200340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123669 (or 123667 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 1212020200340 its reverse (430020202121), we get a palindrome (1642040402461).

The spelling of 1212020200340 in words is "one trillion, two hundred twelve billion, twenty million, two hundred thousand, three hundred forty".