212442140401 has 4 divisors (see below), whose sum is σ = 219295112704. Its totient is φ = 205589168100.

The previous prime is 212442140371. The next prime is 212442140437. The reversal of 212442140401 is 104041244212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212442140401 - 2¹⁹ = 212441616113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212442140441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3426486105 + ... + 3426486166.

It is an arithmetic number, because the mean of its divisors is an integer number (54823778176).

Almost surely, 2^212442140401 is an apocalyptic number.

It is an amenable number.

212442140401 is a deficient number, since it is larger than the sum of its proper divisors (6852972303).

212442140401 is an equidigital number, since it uses as much as digits as its factorization.

212442140401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6852972302.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 212442140401 its reverse (104041244212), we get a palindrome (316483384613).

The spelling of 212442140401 in words is "two hundred twelve billion, four hundred forty-two million, one hundred forty thousand, four hundred one".