212241551501 has 4 divisors (see below), whose sum is σ = 242561773152. Its totient is φ = 181921329852.

The previous prime is 212241551317. The next prime is 212241551519. The reversal of 212241551501 is 105155142212.

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 212241551501 - 2²⁶ = 212174442637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212241551551) 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, 15160110815 + ... + 15160110828.

It is an arithmetic number, because the mean of its divisors is an integer number (60640443288).

Almost surely, 2^212241551501 is an apocalyptic number.

It is an amenable number.

212241551501 is a deficient number, since it is larger than the sum of its proper divisors (30320221651).

212241551501 is an equidigital number, since it uses as much as digits as its factorization.

212241551501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30320221650.

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 212241551501 its reverse (105155142212), we get a palindrome (317396693713).

The spelling of 212241551501 in words is "two hundred twelve billion, two hundred forty-one million, five hundred fifty-one thousand, five hundred one".