1101322231021 has 2 divisors, whose sum is σ = 1101322231022. Its totient is φ = 1101322231020.

The previous prime is 1101322231019. The next prime is 1101322231043. The reversal of 1101322231021 is 1201322231011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 754224508521 + 347097722500 = 868461^2 + 589150^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101322231021 - 2¹ = 1101322231019 is a prime.

Together with 1101322231019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1101322231021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101322231081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550661115510 + 550661115511.

It is an arithmetic number, because the mean of its divisors is an integer number (550661115511).

Almost surely, 2^{1101322231021} is an apocalyptic number.

It is an amenable number.

1101322231021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101322231021 is an equidigital number, since it uses as much as digits as its factorization.

1101322231021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1101322231021 its reverse (1201322231011), we get a palindrome (2302644462032).

The spelling of 1101322231021 in words is "one trillion, one hundred one billion, three hundred twenty-two million, two hundred thirty-one thousand, twenty-one".