1400213443221 has 6 divisors (see below), whose sum is σ = 2022530529110. Its totient is φ = 933475628808.

The previous prime is 1400213443151. The next prime is 1400213443231. The reversal of 1400213443221 is 1223443120041.

1400213443221 is a `hidden beast` number, since 1 + 4 + 0 + 0 + 213 + 443 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 774910484100 + 625302959121 = 880290^2 + 790761^2 .

It is not a de Polignac number, because 1400213443221 - 2¹⁷ = 1400213312149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400213443231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77789635726 + ... + 77789635743.

Almost surely, 2^{1400213443221} is an apocalyptic number.

It is an amenable number.

1400213443221 is a deficient number, since it is larger than the sum of its proper divisors (622317085889).

1400213443221 is a wasteful number, since it uses less digits than its factorization.

1400213443221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155579271475 (or 155579271472 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1400213443221 its reverse (1223443120041), we get a palindrome (2623656563262).

The spelling of 1400213443221 in words is "one trillion, four hundred billion, two hundred thirteen million, four hundred forty-three thousand, two hundred twenty-one".