221241001431 has 8 divisors (see below), whose sum is σ = 294994689264. Its totient is φ = 147490657280.

The previous prime is 221241001411. The next prime is 221241001447. The reversal of 221241001431 is 134100142122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221241001431 is a prime.

It is a super-2 number, since 2×221241001431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221241001398 and 221241001407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221241001411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677226 + ... + 949271.

It is an arithmetic number, because the mean of its divisors is an integer number (36874336158).

Almost surely, 2^221241001431 is an apocalyptic number.

221241001431 is a deficient number, since it is larger than the sum of its proper divisors (73753687833).

221241001431 is a wasteful number, since it uses less digits than its factorization.

221241001431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671841.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 221241001431 its reverse (134100142122), we get a palindrome (355341143553).

The spelling of 221241001431 in words is "two hundred twenty-one billion, two hundred forty-one million, one thousand, four hundred thirty-one".