1221122022143 has 2 divisors, whose sum is σ = 1221122022144. Its totient is φ = 1221122022142.

The previous prime is 1221122022091. The next prime is 1221122022167. The reversal of 1221122022143 is 3412202211221.

It is a strong prime.

It is an emirp because it is prime and its reverse (3412202211221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1221122022143 - 2²⁴ = 1221105244927 is a prime.

It is a super-2 number, since 2×1221122022143² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221122022643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610561011071 + 610561011072.

It is an arithmetic number, because the mean of its divisors is an integer number (610561011072).

Almost surely, 2^{1221122022143} is an apocalyptic number.

1221122022143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221122022143 is an equidigital number, since it uses as much as digits as its factorization.

1221122022143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1221122022143 its reverse (3412202211221), we get a palindrome (4633324233364).

The spelling of 1221122022143 in words is "one trillion, two hundred twenty-one billion, one hundred twenty-two million, twenty-two thousand, one hundred forty-three".