121201200001 has 16 divisors (see below), whose sum is σ = 146697433344. Its totient is φ = 97753227264.

The previous prime is 121201199971. The next prime is 121201200007. The reversal of 121201200001 is 100002102121.

It is not a de Polignac number, because 121201200001 - 2⁵ = 121201199969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121201200007) 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, 411201 + ... + 641473.

It is an arithmetic number, because the mean of its divisors is an integer number (9168589584).

Almost surely, 2^121201200001 is an apocalyptic number.

It is an amenable number.

121201200001 is a deficient number, since it is larger than the sum of its proper divisors (25496233343).

121201200001 is a wasteful number, since it uses less digits than its factorization.

121201200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234720.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121201200001 its reverse (100002102121), we get a palindrome (221203302122).

It can be divided in two parts, 12120 and 1200001, that added together give a palindrome (1212121).

The spelling of 121201200001 in words is "one hundred twenty-one billion, two hundred one million, two hundred thousand, one".