100121120011209 has 32 divisors (see below), whose sum is σ = 145763765581824. Its totient is φ = 60624040580480.

The previous prime is 100121120011207. The next prime is 100121120011261. The reversal of 100121120011209 is 902110021121001.

It is a cyclic number.

It is not a de Polignac number, because 100121120011209 - 2¹ = 100121120011207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100121120011207) 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, 441292972 + ... + 441519794.

It is an arithmetic number, because the mean of its divisors is an integer number (4555117674432).

Almost surely, 2^{100121120011209} is an apocalyptic number.

It is an amenable number.

100121120011209 is a deficient number, since it is larger than the sum of its proper divisors (45642645570615).

100121120011209 is a wasteful number, since it uses less digits than its factorization.

100121120011209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238997.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 100121120011209 in words is "one hundred trillion, one hundred twenty-one billion, one hundred twenty million, eleven thousand, two hundred nine".