212442320011 has 4 divisors (see below), whose sum is σ = 212507670024. Its totient is φ = 212376970000.

The previous prime is 212442320009. The next prime is 212442320023. The reversal of 212442320011 is 110023244212.

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

It is a cyclic number.

It is not a de Polignac number, because 212442320011 - 2¹ = 212442320009 is a prime.

It is a super-2 number, since 2×212442320011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212442326011) 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, 32670130 + ... + 32676631.

It is an arithmetic number, because the mean of its divisors is an integer number (53126917506).

Almost surely, 2^212442320011 is an apocalyptic number.

212442320011 is a deficient number, since it is larger than the sum of its proper divisors (65350013).

212442320011 is an equidigital number, since it uses as much as digits as its factorization.

212442320011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65350012.

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

Adding to 212442320011 its reverse (110023244212), we get a palindrome (322465564223).

The spelling of 212442320011 in words is "two hundred twelve billion, four hundred forty-two million, three hundred twenty thousand, eleven".