1213200010221 has 16 divisors (see below), whose sum is σ = 1635842174400. Its totient is φ = 799679669888.

The previous prime is 1213200010201. The next prime is 1213200010229. The reversal of 1213200010221 is 1220100023121.

It is a cyclic number.

It is not a de Polignac number, because 1213200010221 - 2⁷ = 1213200010093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213200010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213200010229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7658995 + ... + 7815791.

It is an arithmetic number, because the mean of its divisors is an integer number (102240135900).

Almost surely, 2^{1213200010221} is an apocalyptic number.

It is an amenable number.

1213200010221 is a deficient number, since it is larger than the sum of its proper divisors (422642164179).

1213200010221 is a wasteful number, since it uses less digits than its factorization.

1213200010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185868.

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

Adding to 1213200010221 its reverse (1220100023121), we get a palindrome (2433300033342).

The spelling of 1213200010221 in words is "one trillion, two hundred thirteen billion, two hundred million, ten thousand, two hundred twenty-one".