100120001211 has 32 divisors (see below), whose sum is σ = 148949064000. Its totient is φ = 66466842624.

The previous prime is 100120001183. The next prime is 100120001237. The reversal of 100120001211 is 112100021001.

It is a happy number.

It is not a de Polignac number, because 100120001211 - 2¹³ = 100119993019 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 = 100120001193 and 100120001202.

It is not an unprimeable number, because it can be changed into a prime (100120001011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6540855 + ... + 6556143.

It is an arithmetic number, because the mean of its divisors is an integer number (4654658250).

Almost surely, 2^100120001211 is an apocalyptic number.

100120001211 is a deficient number, since it is larger than the sum of its proper divisors (48829062789).

100120001211 is a wasteful number, since it uses less digits than its factorization.

100120001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16300 (or 16294 counting only the distinct ones).

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

Adding to 100120001211 its reverse (112100021001), we get a palindrome (212220022212).

The spelling of 100120001211 in words is "one hundred billion, one hundred twenty million, one thousand, two hundred eleven".