20121022011001 has 16 divisors (see below), whose sum is σ = 20330545956160. Its totient is φ = 19912671313920.

The previous prime is 20121022010939. The next prime is 20121022011017. The reversal of 20121022011001 is 10011022012102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20121022011001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121022011091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88622041 + ... + 88848793.

It is an arithmetic number, because the mean of its divisors is an integer number (1270659122260).

Almost surely, 2^{20121022011001} is an apocalyptic number.

It is an amenable number.

20121022011001 is a deficient number, since it is larger than the sum of its proper divisors (209523945159).

20121022011001 is a wasteful number, since it uses less digits than its factorization.

20121022011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229336.

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

Adding to 20121022011001 its reverse (10011022012102), we get a palindrome (30132044023103).

The spelling of 20121022011001 in words is "twenty trillion, one hundred twenty-one billion, twenty-two million, eleven thousand, one".