1213221010200 has 48 divisors (see below), whose sum is σ = 3760985133480. Its totient is φ = 323525602560.

The previous prime is 1213221010193. The next prime is 1213221010219. The reversal of 1213221010200 is 20101223121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1213221010200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1011016909 + ... + 1011018108.

Almost surely, 2^{1213221010200} is an apocalyptic number.

1213221010200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213221010200 is an abundant number, since it is smaller than the sum of its proper divisors (2547764123280).

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

1213221010200 is a wasteful number, since it uses less digits than its factorization.

1213221010200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022035036 (or 2022035027 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1213221010200 its reverse (20101223121), we get a palindrome (1233322233321).

The spelling of 1213221010200 in words is "one trillion, two hundred thirteen billion, two hundred twenty-one million, ten thousand, two hundred".