212240121441 has 32 divisors (see below), whose sum is σ = 298421971200. Its totient is φ = 133908192000.

The previous prime is 212240121437. The next prime is 212240121481. The reversal of 212240121441 is 144121042212.

It is a happy number.

It is not a de Polignac number, because 212240121441 - 2² = 212240121437 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212240121421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10785151 + ... + 10804811.

It is an arithmetic number, because the mean of its divisors is an integer number (9325686600).

Almost surely, 2^212240121441 is an apocalyptic number.

It is an amenable number.

212240121441 is a deficient number, since it is larger than the sum of its proper divisors (86181849759).

212240121441 is a wasteful number, since it uses less digits than its factorization.

212240121441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21337.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 212240121441 its reverse (144121042212), we get a palindrome (356361163653).

The spelling of 212240121441 in words is "two hundred twelve billion, two hundred forty million, one hundred twenty-one thousand, four hundred forty-one".