100220121222111 has 24 divisors (see below), whose sum is σ = 157923876162000. Its totient is φ = 60738982444800.

The previous prime is 100220121222083. The next prime is 100220121222113. The reversal of 100220121222111 is 111222121022001.

100220121222111 is a `hidden beast` number, since 1 + 0 + 0 + 220 + 1 + 212 + 221 + 11 = 666.

It is not a de Polignac number, because 100220121222111 - 2¹⁵ = 100220121189343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220121222113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8619921 + ... + 16575381.

It is an arithmetic number, because the mean of its divisors is an integer number (6580161506750).

Almost surely, 2^{100220121222111} is an apocalyptic number.

100220121222111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100220121222111 is a deficient number, since it is larger than the sum of its proper divisors (57703754939889).

100220121222111 is a wasteful number, since it uses less digits than its factorization.

100220121222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8082727 (or 8082724 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 100220121222111 its reverse (111222121022001), we get a palindrome (211442242244112).

The spelling of 100220121222111 in words is "one hundred trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred eleven".