361443142221 has 16 divisors (see below), whose sum is σ = 574717046784. Its totient is φ = 197558984304.

The previous prime is 361443142211. The next prime is 361443142261. The reversal of 361443142221 is 122241344163.

It is not a de Polignac number, because 361443142221 - 2¹³ = 361443134029 is a prime.

It is a super-2 number, since 2×361443142221² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361443142211) 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, 374164261 + ... + 374165226.

It is an arithmetic number, because the mean of its divisors is an integer number (35919815424).

Almost surely, 2^361443142221 is an apocalyptic number.

It is an amenable number.

361443142221 is a deficient number, since it is larger than the sum of its proper divisors (213273904563).

361443142221 is a wasteful number, since it uses less digits than its factorization.

361443142221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748329520.

The product of its digits is 27648, while the sum is 33.

Adding to 361443142221 its reverse (122241344163), we get a palindrome (483684486384).

The spelling of 361443142221 in words is "three hundred sixty-one billion, four hundred forty-three million, one hundred forty-two thousand, two hundred twenty-one".