20001022111004 has 48 divisors (see below), whose sum is σ = 40941644244480. Its totient is φ = 8448275746560.

The previous prime is 20001022111003. The next prime is 20001022111043. The reversal of 20001022111004 is 40011122010002.

It is a happy number.

It is a super-3 number, since 3×20001022111004³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20001022111004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001022111003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169177202 + ... + 169295385.

It is an arithmetic number, because the mean of its divisors is an integer number (852950921760).

Almost surely, 2^{20001022111004} is an apocalyptic number.

It is an amenable number.

20001022111004 is an abundant number, since it is smaller than the sum of its proper divisors (20940622133476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001022111004 is a wasteful number, since it uses less digits than its factorization.

20001022111004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338472698 (or 338472696 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20001022111004 its reverse (40011122010002), we get a palindrome (60012144121006).

The spelling of 20001022111004 in words is "twenty trillion, one billion, twenty-two million, one hundred eleven thousand, four".