221412435765144 has 32 divisors (see below), whose sum is σ = 596110403983920. Its totient is φ = 68126903312256.

The previous prime is 221412435765113. The next prime is 221412435765203. The reversal of 221412435765144 is 441567534214122.

It is a super-2 number, since 2×221412435765144² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354827621107 + ... + 354827621730.

Almost surely, 2^{221412435765144} is an apocalyptic number.

221412435765144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221412435765144 is an abundant number, since it is smaller than the sum of its proper divisors (374697968218776).

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

221412435765144 is a wasteful number, since it uses less digits than its factorization.

221412435765144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709655242859 (or 709655242855 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 51.

Adding to 221412435765144 its reverse (441567534214122), we get a palindrome (662979969979266).

The spelling of 221412435765144 in words is "two hundred twenty-one trillion, four hundred twelve billion, four hundred thirty-five million, seven hundred sixty-five thousand, one hundred forty-four".