43121151551222 has 4 divisors (see below), whose sum is σ = 64681727326836. Its totient is φ = 21560575775610.

The previous prime is 43121151551209. The next prime is 43121151551273. The reversal of 43121151551222 is 22215515112134.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×43121151551222² (a number of 28 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 as a sum of consecutive naturals, namely, 10780287887804 + ... + 10780287887807.

It is an arithmetic number, because the mean of its divisors is an integer number (16170431831709).

Almost surely, 2^{43121151551222} is an apocalyptic number.

43121151551222 is a deficient number, since it is larger than the sum of its proper divisors (21560575775614).

43121151551222 is a wasteful number, since it uses less digits than its factorization.

43121151551222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21560575775613.

The product of its digits is 24000, while the sum is 35.

Adding to 43121151551222 its reverse (22215515112134), we get a palindrome (65336666663356).

The spelling of 43121151551222 in words is "forty-three trillion, one hundred twenty-one billion, one hundred fifty-one million, five hundred fifty-one thousand, two hundred twenty-two".