2212001021200 has 30 divisors (see below), whose sum is σ = 5314332454394. Its totient is φ = 884800408320.

The previous prime is 2212001021173. The next prime is 2212001021221. The reversal of 2212001021200 is 21201002122.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 23163622416 + 2188837398784 = 152196^2 + 1479472^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2765000877 + ... + 2765001676.

Almost surely, 2^{2212001021200} is an apocalyptic number.

2212001021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212001021200 is an abundant number, since it is smaller than the sum of its proper divisors (3102331433194).

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

2212001021200 is a wasteful number, since it uses less digits than its factorization.

2212001021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5530002571 (or 5530002560 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2212001021200 its reverse (21201002122), we get a palindrome (2233202023322).

The spelling of 2212001021200 in words is "two trillion, two hundred twelve billion, one million, twenty-one thousand, two hundred".