20111011222021 has 8 divisors (see below), whose sum is σ = 20136346683264. Its totient is φ = 20085677945040.

The previous prime is 20111011222013. The next prime is 20111011222031. The reversal of 20111011222021 is 12022211011102.

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 20111011222021 - 2³ = 20111011222013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20111011221986 and 20111011222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111011222031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18288615 + ... + 19357051.

It is an arithmetic number, because the mean of its divisors is an integer number (2517043335408).

Almost surely, 2^{20111011222021} is an apocalyptic number.

It is an amenable number.

20111011222021 is a deficient number, since it is larger than the sum of its proper divisors (25335461243).

20111011222021 is a wasteful number, since it uses less digits than its factorization.

20111011222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092131.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20111011222021 its reverse (12022211011102), we get a palindrome (32133222233123).

The spelling of 20111011222021 in words is "twenty trillion, one hundred eleven billion, eleven million, two hundred twenty-two thousand, twenty-one".