243121212022 has 32 divisors (see below), whose sum is σ = 416631775392. Its totient is φ = 105407184384.

The previous prime is 243121212011. The next prime is 243121212049. The reversal of 243121212022 is 220212121342.

It is a junction number, because it is equal to n+sod(n) for n = 243121211984 and 243121212002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294693 + ... + 757024.

It is an arithmetic number, because the mean of its divisors is an integer number (13019742981).

Almost surely, 2^243121212022 is an apocalyptic number.

243121212022 is a deficient number, since it is larger than the sum of its proper divisors (173510563370).

243121212022 is a wasteful number, since it uses less digits than its factorization.

243121212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052272.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 243121212022 its reverse (220212121342), we get a palindrome (463333333364).

The spelling of 243121212022 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred twelve thousand, twenty-two".