100021001220111 has 8 divisors (see below), whose sum is σ = 133709536880640. Its totient is φ = 66506566519832.

The previous prime is 100021001220103. The next prime is 100021001220157. The reversal of 100021001220111 is 111022100120001.

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

It is a cyclic number.

It is not a de Polignac number, because 100021001220111 - 2³ = 100021001220103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021001220181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43525238721 + ... + 43525241018.

It is an arithmetic number, because the mean of its divisors is an integer number (16713692110080).

Almost surely, 2^{100021001220111} is an apocalyptic number.

100021001220111 is a deficient number, since it is larger than the sum of its proper divisors (33688535660529).

100021001220111 is an equidigital number, since it uses as much as digits as its factorization.

100021001220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87050480125.

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

Adding to 100021001220111 its reverse (111022100120001), we get a palindrome (211043101340112).

It can be divided in two parts, 10002100 and 1220111, that added together give a palindrome (11222211).

The spelling of 100021001220111 in words is "one hundred trillion, twenty-one billion, one million, two hundred twenty thousand, one hundred eleven".