100020121211011 has 4 divisors (see below), whose sum is σ = 100020742086952. Its totient is φ = 100019500335072.

The previous prime is 100020121211009. The next prime is 100020121211041. The reversal of 100020121211011 is 110112121020001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 100020121211011 - 2¹ = 100020121211009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100020121210982 and 100020121211000.

It is not an unprimeable number, because it can be changed into a prime (100020121211041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310196265 + ... + 310518538.

It is an arithmetic number, because the mean of its divisors is an integer number (25005185521738).

Almost surely, 2^{100020121211011} is an apocalyptic number.

100020121211011 is a deficient number, since it is larger than the sum of its proper divisors (620875941).

100020121211011 is an equidigital number, since it uses as much as digits as its factorization.

100020121211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620875940.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 100020121211011 its reverse (110112121020001), we get a palindrome (210132242231012).

The spelling of 100020121211011 in words is "one hundred trillion, twenty billion, one hundred twenty-one million, two hundred eleven thousand, eleven".