20121012001001 has 8 divisors (see below), whose sum is σ = 20164328645760. Its totient is φ = 20077696344208.

The previous prime is 20121012000979. The next prime is 20121012001003. The reversal of 20121012001001 is 10010021012102.

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 20121012001001 - 2⁶ = 20121012000937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121012001003) 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, 52733615 + ... + 53113803.

It is an arithmetic number, because the mean of its divisors is an integer number (2520541080720).

Almost surely, 2^{20121012001001} is an apocalyptic number.

It is an amenable number.

20121012001001 is a deficient number, since it is larger than the sum of its proper divisors (43316644759).

20121012001001 is a wasteful number, since it uses less digits than its factorization.

20121012001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493983.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20121012001001 its reverse (10010021012102), we get a palindrome (30131033013103).

The spelling of 20121012001001 in words is "twenty trillion, one hundred twenty-one billion, twelve million, one thousand, one".