100021321210111 has 4 divisors (see below), whose sum is σ = 114310081382992. Its totient is φ = 85732561037232.

The previous prime is 100021321210043. The next prime is 100021321210171. The reversal of 100021321210111 is 111012123120001.

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 100021321210111 - 2¹⁹ = 100021320685823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021321210171) 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, 7144380086430 + ... + 7144380086443.

It is an arithmetic number, because the mean of its divisors is an integer number (28577520345748).

Almost surely, 2^{100021321210111} is an apocalyptic number.

100021321210111 is a deficient number, since it is larger than the sum of its proper divisors (14288760172881).

100021321210111 is an equidigital number, since it uses as much as digits as its factorization.

100021321210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14288760172880.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 100021321210111 its reverse (111012123120001), we get a palindrome (211033444330112).

The spelling of 100021321210111 in words is "one hundred trillion, twenty-one billion, three hundred twenty-one million, two hundred ten thousand, one hundred eleven".