1222100213200 has 30 divisors (see below), whose sum is σ = 2936095763174. Its totient is φ = 488840085120.

The previous prime is 1222100213197. The next prime is 1222100213221. The reversal of 1222100213200 is 23120012221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 415344158784 + 806756054416 = 644472^2 + 898196^2 .

It is a super-2 number, since 2×1222100213200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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, 1527624867 + ... + 1527625666.

Almost surely, 2^{1222100213200} is an apocalyptic number.

1222100213200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222100213200 is an abundant number, since it is smaller than the sum of its proper divisors (1713995549974).

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

1222100213200 is a wasteful number, since it uses less digits than its factorization.

1222100213200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055250551 (or 3055250540 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1222100213200 its reverse (23120012221), we get a palindrome (1245220225421).

The spelling of 1222100213200 in words is "one trillion, two hundred twenty-two billion, one hundred million, two hundred thirteen thousand, two hundred".