100121223111 has 64 divisors (see below), whose sum is σ = 176079095808. Its totient is φ = 49149669888.

The previous prime is 100121223089. The next prime is 100121223113. The reversal of 100121223111 is 111322121001.

It is not a de Polignac number, because 100121223111 - 2⁶ = 100121223047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121223113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16845 + ... + 447801.

It is an arithmetic number, because the mean of its divisors is an integer number (2751235872).

Almost surely, 2^100121223111 is an apocalyptic number.

100121223111 is a deficient number, since it is larger than the sum of its proper divisors (75957872697).

100121223111 is a wasteful number, since it uses less digits than its factorization.

100121223111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431040.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 100121223111 its reverse (111322121001), we get a palindrome (211443344112).

The spelling of 100121223111 in words is "one hundred billion, one hundred twenty-one million, two hundred twenty-three thousand, one hundred eleven".