20121010121201 has 16 divisors (see below), whose sum is σ = 22200934943040. Its totient is φ = 18083291489280.

The previous prime is 20121010121143. The next prime is 20121010121287. The reversal of 20121010121201 is 10212101012102.

It is a cyclic number.

It is not a de Polignac number, because 20121010121201 - 2³⁰ = 20119936379377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121010181201) 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, 9427796 + ... + 11363333.

It is an arithmetic number, because the mean of its divisors is an integer number (1387558433940).

Almost surely, 2^{20121010121201} is an apocalyptic number.

It is an amenable number.

20121010121201 is a deficient number, since it is larger than the sum of its proper divisors (2079924821839).

20121010121201 is a wasteful number, since it uses less digits than its factorization.

20121010121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20792144.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20121010121201 its reverse (10212101012102), we get a palindrome (30333111133303).

The spelling of 20121010121201 in words is "twenty trillion, one hundred twenty-one billion, ten million, one hundred twenty-one thousand, two hundred one".