100021101111 has 48 divisors (see below), whose sum is σ = 160072645824. Its totient is φ = 59909870592.

The previous prime is 100021101107. The next prime is 100021101127. The reversal of 100021101111 is 111101120001.

It is not a de Polignac number, because 100021101111 - 2² = 100021101107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100021101093 and 100021101102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021101151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133350 + ... + 466716.

It is an arithmetic number, because the mean of its divisors is an integer number (3334846788).

Almost surely, 2^100021101111 is an apocalyptic number.

100021101111 is a deficient number, since it is larger than the sum of its proper divisors (60051544713).

100021101111 is a wasteful number, since it uses less digits than its factorization.

100021101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333480 (or 333477 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 100021101111 its reverse (111101120001), we get a palindrome (211122221112).

The spelling of 100021101111 in words is "one hundred billion, twenty-one million, one hundred one thousand, one hundred eleven".