1210200021340 has 24 divisors (see below), whose sum is σ = 2541440713392. Its totient is φ = 484076071680.

The previous prime is 1210200021319. The next prime is 1210200021341. The reversal of 1210200021340 is 431200020121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210200021341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4681060 + ... + 4932820.

It is an arithmetic number, because the mean of its divisors is an integer number (105893363058).

Almost surely, 2^{1210200021340} is an apocalyptic number.

1210200021340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210200021340 is an abundant number, since it is smaller than the sum of its proper divisors (1331240692052).

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

1210200021340 is a wasteful number, since it uses less digits than its factorization.

1210200021340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492117 (or 492115 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1210200021340 its reverse (431200020121), we get a palindrome (1641400041461).

The spelling of 1210200021340 in words is "one trillion, two hundred ten billion, two hundred million, twenty-one thousand, three hundred forty".