20121202012201 has 4 divisors (see below), whose sum is σ = 20121223305600. Its totient is φ = 20121180718804.

The previous prime is 20121202012189. The next prime is 20121202012213. The reversal of 20121202012201 is 10221020212102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20121202012189) and next prime (20121202012213).

It is a cyclic number.

It is not a de Polignac number, because 20121202012201 - 2²⁷ = 20121067794473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121202012501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9160081 + ... + 11142238.

It is an arithmetic number, because the mean of its divisors is an integer number (5030305826400).

Almost surely, 2^{20121202012201} is an apocalyptic number.

It is an amenable number.

20121202012201 is a deficient number, since it is larger than the sum of its proper divisors (21293399).

20121202012201 is an equidigital number, since it uses as much as digits as its factorization.

20121202012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21293398.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20121202012201 its reverse (10221020212102), we get a palindrome (30342222224303).

The spelling of 20121202012201 in words is "twenty trillion, one hundred twenty-one billion, two hundred two million, twelve thousand, two hundred one".