1212422221141 has 4 divisors (see below), whose sum is σ = 1212744078432. Its totient is φ = 1212100363852.

The previous prime is 1212422221139. The next prime is 1212422221193. The reversal of 1212422221141 is 1411222242121.

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 1212422221141 - 2¹ = 1212422221139 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 (1212422201141) 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, 160922995 + ... + 160930528.

It is an arithmetic number, because the mean of its divisors is an integer number (303186019608).

Almost surely, 2^{1212422221141} is an apocalyptic number.

It is an amenable number.

1212422221141 is a deficient number, since it is larger than the sum of its proper divisors (321857291).

1212422221141 is an equidigital number, since it uses as much as digits as its factorization.

1212422221141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321857290.

The product of its digits is 1024, while the sum is 25.

Adding to 1212422221141 its reverse (1411222242121), we get a palindrome (2623644463262).

The spelling of 1212422221141 in words is "one trillion, two hundred twelve billion, four hundred twenty-two million, two hundred twenty-one thousand, one hundred forty-one".