1210201220000 has 120 divisors (see below), whose sum is σ = 2978061368436. Its totient is φ = 483952896000.

The previous prime is 1210201219973. The next prime is 1210201220117. The reversal of 1210201220000 is 221020121.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 2848570384 + 1207352649616 = 53372^2 + 1098796^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 124335134 + ... + 124344866.

Almost surely, 2^{1210201220000} is an apocalyptic number.

1210201220000 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 1210201220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1489030684218).

1210201220000 is an abundant number, since it is smaller than the sum of its proper divisors (1767860148436).

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

1210201220000 is an frugal number, since it uses more digits than its factorization.

1210201220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15980 (or 15957 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1210201220000 its reverse (221020121), we get a palindrome (1210422240121).

The spelling of 1210201220000 in words is "one trillion, two hundred ten billion, two hundred one million, two hundred twenty thousand".