1000122121011 has 64 divisors (see below), whose sum is σ = 1547446208000. Its totient is φ = 569273370624.

The previous prime is 1000122121003. The next prime is 1000122121013. The reversal of 1000122121011 is 1101212210001.

It is not a de Polignac number, because 1000122121011 - 2³ = 1000122121003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000122121013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 103645515 + ... + 103655163.

It is an arithmetic number, because the mean of its divisors is an integer number (24178847000).

Almost surely, 2^{1000122121011} is an apocalyptic number.

1000122121011 is a deficient number, since it is larger than the sum of its proper divisors (547324086989).

1000122121011 is a wasteful number, since it uses less digits than its factorization.

1000122121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12980.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1000122121011 its reverse (1101212210001), we get a palindrome (2101334331012).

The spelling of 1000122121011 in words is "one trillion, one hundred twenty-two million, one hundred twenty-one thousand, eleven".