100212321091 has 16 divisors (see below), whose sum is σ = 109149300000. Its totient is φ = 91643118336.

The previous prime is 100212321071. The next prime is 100212321133. The reversal of 100212321091 is 190123212001.

It is a cyclic number.

It is not a de Polignac number, because 100212321091 - 2¹³ = 100212312899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100212321071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2686335 + ... + 2723383.

It is an arithmetic number, because the mean of its divisors is an integer number (6821831250).

Almost surely, 2^100212321091 is an apocalyptic number.

100212321091 is a deficient number, since it is larger than the sum of its proper divisors (8936978909).

100212321091 is a wasteful number, since it uses less digits than its factorization.

100212321091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42006.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 100212321091 its reverse (190123212001), we get a palindrome (290335533092).

The spelling of 100212321091 in words is "one hundred billion, two hundred twelve million, three hundred twenty-one thousand, ninety-one".