100001221020011 has 8 divisors (see below), whose sum is σ = 106855055382240. Its totient is φ = 93255321057408.

The previous prime is 100001221019981. The next prime is 100001221020053. The reversal of 100001221020011 is 110020122100001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100001221020011 - 2¹⁰ = 100001221018987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100001221019974 and 100001221020001.

It is not an unprimeable number, because it can be changed into a prime (100001221020091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26983597991 + ... + 26983601696.

It is an arithmetic number, because the mean of its divisors is an integer number (13356881922780).

Almost surely, 2^{100001221020011} is an apocalyptic number.

100001221020011 is a deficient number, since it is larger than the sum of its proper divisors (6853834362229).

100001221020011 is a wasteful number, since it uses less digits than its factorization.

100001221020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53967199813.

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

Adding to 100001221020011 its reverse (110020122100001), we get a palindrome (210021343120012).

The spelling of 100001221020011 in words is "one hundred trillion, one billion, two hundred twenty-one million, twenty thousand, eleven".