100220121212111 has 16 divisors (see below), whose sum is σ = 102586649707008. Its totient is φ = 97863450720000.

The previous prime is 100220121212089. The next prime is 100220121212147. The reversal of 100220121212111 is 111212121022001.

It is a cyclic number.

It is not a de Polignac number, because 100220121212111 - 2²² = 100220117017807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100220121212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220121212711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91788356 + ... + 92873798.

It is an arithmetic number, because the mean of its divisors is an integer number (6411665606688).

Almost surely, 2^{100220121212111} is an apocalyptic number.

100220121212111 is a deficient number, since it is larger than the sum of its proper divisors (2366528494897).

100220121212111 is a wasteful number, since it uses less digits than its factorization.

100220121212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089982.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 100220121212111 its reverse (111212121022001), we get a palindrome (211432242234112).

The spelling of 100220121212111 in words is "one hundred trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twelve thousand, one hundred eleven".