1212101402200 has 96 divisors (see below), whose sum is σ = 3040367747760. Its totient is φ = 446741107200.

The previous prime is 1212101402131. The next prime is 1212101402203. The reversal of 1212101402200 is 22041012121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212101402203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1029715 + ... + 1866685.

Almost surely, 2^{1212101402200} is an apocalyptic number.

1212101402200 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 1212101402200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520183873880).

1212101402200 is an abundant number, since it is smaller than the sum of its proper divisors (1828266345560).

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

1212101402200 is a wasteful number, since it uses less digits than its factorization.

1212101402200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837557 (or 837548 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212101402200 its reverse (22041012121), we get a palindrome (1234142414321).

The spelling of 1212101402200 in words is "one trillion, two hundred twelve billion, one hundred one million, four hundred two thousand, two hundred".