20010021001111 has 8 divisors (see below), whose sum is σ = 20029635838800. Its totient is φ = 19990407193152.

The previous prime is 20010021001073. The next prime is 20010021001129. The reversal of 20010021001111 is 11110012001002.

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 20010021001111 - 2⁴¹ = 17810997745559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010021001171) 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 7 ways as a sum of consecutive naturals, for example, 42020101 + ... + 42493633.

It is an arithmetic number, because the mean of its divisors is an integer number (2503704479850).

Almost surely, 2^{20010021001111} is an apocalyptic number.

20010021001111 is a deficient number, since it is larger than the sum of its proper divisors (19614837689).

20010021001111 is a wasteful number, since it uses less digits than its factorization.

20010021001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514865.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20010021001111 its reverse (11110012001002), we get a palindrome (31120033002113).

The spelling of 20010021001111 in words is "twenty trillion, ten billion, twenty-one million, one thousand, one hundred eleven".