4351340151221 has 18 divisors (see below), whose sum is σ = 5291408268342. Its totient is φ = 3567558363600.

The previous prime is 4351340151173. The next prime is 4351340151251. The reversal of 4351340151221 is 1221510431534.

It can be written as a sum of positive squares in only one way, i.e., 3222563522500 + 1128776628721 = 1795150^2 + 1062439^2 .

It is not a de Polignac number, because 4351340151221 - 2¹⁴ = 4351340134837 is a prime.

It is a super-2 number, since 2×4351340151221² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4351340151251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 83908730 + ... + 83960571.

It is an arithmetic number, because the mean of its divisors is an integer number (293967126019).

Almost surely, 2^{4351340151221} is an apocalyptic number.

It is an amenable number.

4351340151221 is a deficient number, since it is larger than the sum of its proper divisors (940068117121).

4351340151221 is a wasteful number, since it uses less digits than its factorization.

4351340151221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167869361 (or 167869331 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 4351340151221 its reverse (1221510431534), we get a palindrome (5572850582755).

The spelling of 4351340151221 in words is "four trillion, three hundred fifty-one billion, three hundred forty million, one hundred fifty-one thousand, two hundred twenty-one".