1221034143011 has 2 divisors, whose sum is σ = 1221034143012. Its totient is φ = 1221034143010.

The previous prime is 1221034142989. The next prime is 1221034143019. The reversal of 1221034143011 is 1103414301221.

It is a strong prime.

It is an emirp because it is prime and its reverse (1103414301221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1221034143011 - 2³⁴ = 1203854273827 is a prime.

It is a super-2 number, since 2×1221034143011² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1221034143019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610517071505 + 610517071506.

It is an arithmetic number, because the mean of its divisors is an integer number (610517071506).

Almost surely, 2^{1221034143011} is an apocalyptic number.

1221034143011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221034143011 is an equidigital number, since it uses as much as digits as its factorization.

1221034143011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1221034143011 its reverse (1103414301221), we get a palindrome (2324448444232).

The spelling of 1221034143011 in words is "one trillion, two hundred twenty-one billion, thirty-four million, one hundred forty-three thousand, eleven".