20111020022 has 8 divisors (see below), whose sum is σ = 31754242200. Its totient is φ = 9526272624.

The previous prime is 20111020019. The next prime is 20111020031. The reversal of 20111020022 is 22002011102.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20111019985 and 20111020012.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 264618647 + ... + 264618722.

It is an arithmetic number, because the mean of its divisors is an integer number (3969280275).

Almost surely, 2^20111020022 is an apocalyptic number.

20111020022 is a deficient number, since it is larger than the sum of its proper divisors (11643222178).

20111020022 is a wasteful number, since it uses less digits than its factorization.

20111020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529237390.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20111020022 its reverse (22002011102), we get a palindrome (42113031124).

The spelling of 20111020022 in words is "twenty billion, one hundred eleven million, twenty thousand, twenty-two".