1101000122021 has 4 divisors (see below), whose sum is σ = 1138965643500. Its totient is φ = 1063034600544.

The previous prime is 1101000121999. The next prime is 1101000122041. The reversal of 1101000122021 is 1202210001011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 262651125025 + 838348996996 = 512495^2 + 915614^2 .

It is not a de Polignac number, because 1101000122021 - 2¹⁴ = 1101000105637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101000121993 and 1101000122011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101000122041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18982760696 + ... + 18982760753.

It is an arithmetic number, because the mean of its divisors is an integer number (284741410875).

Almost surely, 2^{1101000122021} is an apocalyptic number.

It is an amenable number.

1101000122021 is a deficient number, since it is larger than the sum of its proper divisors (37965521479).

1101000122021 is an equidigital number, since it uses as much as digits as its factorization.

1101000122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37965521478.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1101000122021 its reverse (1202210001011), we get a palindrome (2303210123032).

The spelling of 1101000122021 in words is "one trillion, one hundred one billion, one hundred twenty-two thousand, twenty-one".