121012112110001 has 16 divisors (see below), whose sum is σ = 143072157427200. Its totient is φ = 100145399500608.

The previous prime is 121012112109997. The next prime is 121012112110003. The reversal of 121012112110001 is 100011211210121.

It is not a de Polignac number, because 121012112110001 - 2² = 121012112109997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121012112110003) 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, 390920 + ... + 15562038.

It is an arithmetic number, because the mean of its divisors is an integer number (8942009839200).

Almost surely, 2^{121012112110001} is an apocalyptic number.

It is an amenable number.

121012112110001 is a deficient number, since it is larger than the sum of its proper divisors (22060045317199).

121012112110001 is a wasteful number, since it uses less digits than its factorization.

121012112110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15210448.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121012112110001 its reverse (100011211210121), we get a palindrome (221023323320122).

The spelling of 121012112110001 in words is "one hundred twenty-one trillion, twelve billion, one hundred twelve million, one hundred ten thousand, one".