1210200021342 has 48 divisors (see below), whose sum is σ = 2831250917040. Its totient is φ = 371386705536.

The previous prime is 1210200021341. The next prime is 1210200021343. The reversal of 1210200021342 is 2431200020121.

It is a happy number.

1210200021342 is a `hidden beast` number, since 1 + 210 + 200 + 0 + 213 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (1210200021341) and next prime (1210200021343).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 6734263 + ... + 6911634.

It is an arithmetic number, because the mean of its divisors is an integer number (58984394105).

Almost surely, 2^{1210200021342} is an apocalyptic number.

1210200021342 is an abundant number, since it is smaller than the sum of its proper divisors (1621050895698).

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

1210200021342 is a wasteful number, since it uses less digits than its factorization.

1210200021342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13646297 (or 13646294 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1210200021342 its reverse (2431200020121), we get a palindrome (3641400041463).

The spelling of 1210200021342 in words is "one trillion, two hundred ten billion, two hundred million, twenty-one thousand, three hundred forty-two".