100120201011 has 16 divisors (see below), whose sum is σ = 148340639520. Its totient is φ = 66740313600.

The previous prime is 100120201009. The next prime is 100120201109. The reversal of 100120201011 is 110102021001.

It is a happy number.

It is not a de Polignac number, because 100120201011 - 2¹ = 100120201009 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 = 100120200984 and 100120201002.

It is not an unprimeable number, because it can be changed into a prime (100120208011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111331 + ... + 461123.

It is an arithmetic number, because the mean of its divisors is an integer number (9271289970).

Almost surely, 2^100120201011 is an apocalyptic number.

100120201011 is a deficient number, since it is larger than the sum of its proper divisors (48220438509).

100120201011 is a wasteful number, since it uses less digits than its factorization.

100120201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360403 (or 360397 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100120201011 its reverse (110102021001), we get a palindrome (210222222012).

The spelling of 100120201011 in words is "one hundred billion, one hundred twenty million, two hundred one thousand, eleven".