1200210200020 has 48 divisors (see below), whose sum is σ = 2714404483728. Its totient is φ = 443140992000.

The previous prime is 1200210200011. The next prime is 1200210200023. The reversal of 1200210200020 is 200020120021.

It can be written as a sum of positive squares in 8 ways, for example, as 13648781584 + 1186561418436 = 116828^2 + 1089294^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200210200023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13365270 + ... + 13454770.

It is an arithmetic number, because the mean of its divisors is an integer number (56550093411).

Almost surely, 2^{1200210200020} is an apocalyptic number.

1200210200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200210200020 is an abundant number, since it is smaller than the sum of its proper divisors (1514194283708).

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

1200210200020 is a wasteful number, since it uses less digits than its factorization.

1200210200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141100 (or 141098 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1200210200020 its reverse (200020120021), we get a palindrome (1400230320041).

The spelling of 1200210200020 in words is "one trillion, two hundred billion, two hundred ten million, two hundred thousand, twenty".