2012121201001 has 8 divisors (see below), whose sum is σ = 2063530344960. Its totient is φ = 1961070309408.

The previous prime is 2012121200993. The next prime is 2012121201011. The reversal of 2012121201001 is 1001021212102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2012121201001 - 2³ = 2012121200993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012121201011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89551716 + ... + 89574181.

It is an arithmetic number, because the mean of its divisors is an integer number (257941293120).

Almost surely, 2^{2012121201001} is an apocalyptic number.

It is an amenable number.

2012121201001 is a deficient number, since it is larger than the sum of its proper divisors (51409143959).

2012121201001 is a wasteful number, since it uses less digits than its factorization.

2012121201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179126183.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2012121201001 its reverse (1001021212102), we get a palindrome (3013142413103).

It can be divided in two parts, 2012121 and 201001, that added together give a palindrome (2213122).

The spelling of 2012121201001 in words is "two trillion, twelve billion, one hundred twenty-one million, two hundred one thousand, one".