100021120212111 has 32 divisors (see below), whose sum is σ = 153143736345600. Its totient is φ = 56881254827520.

The previous prime is 100021120212077. The next prime is 100021120212113. The reversal of 100021120212111 is 111212021120001.

It is a happy number.

It is not a de Polignac number, because 100021120212111 - 2¹⁸ = 100021119949967 is a prime.

It is a super-2 number, since 2×100021120212111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021120212113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1551705 + ... + 14228493.

It is an arithmetic number, because the mean of its divisors is an integer number (4785741760800).

Almost surely, 2^{100021120212111} is an apocalyptic number.

100021120212111 is a deficient number, since it is larger than the sum of its proper divisors (53122616133489).

100021120212111 is a wasteful number, since it uses less digits than its factorization.

100021120212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12678599.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 100021120212111 its reverse (111212021120001), we get a palindrome (211233141332112).

The spelling of 100021120212111 in words is "one hundred trillion, twenty-one billion, one hundred twenty million, two hundred twelve thousand, one hundred eleven".