1220213142243 has 12 divisors (see below), whose sum is σ = 1762637982040. Its totient is φ = 813425633856.

The previous prime is 1220213142193. The next prime is 1220213142293. The reversal of 1220213142243 is 3422413120221.

1220213142243 is a `hidden beast` number, since 1 + 2 + 20 + 213 + 1 + 422 + 4 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1220213142193) and next prime (1220213142293).

It is not a de Polignac number, because 1220213142243 - 2²⁸ = 1219944706787 is a prime.

It is a super-2 number, since 2×1220213142243² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220213142293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3994021 + ... + 4288662.

Almost surely, 2^{1220213142243} is an apocalyptic number.

1220213142243 is a deficient number, since it is larger than the sum of its proper divisors (542424839797).

1220213142243 is a wasteful number, since it uses less digits than its factorization.

1220213142243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8299058 (or 8299055 counting only the distinct ones).

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

Adding to 1220213142243 its reverse (3422413120221), we get a palindrome (4642626262464).

The spelling of 1220213142243 in words is "one trillion, two hundred twenty billion, two hundred thirteen million, one hundred forty-two thousand, two hundred forty-three".