220021211101 has 4 divisors (see below), whose sum is σ = 220022828604. Its totient is φ = 220019593600.

The previous prime is 220021211021. The next prime is 220021211153. The reversal of 220021211101 is 101112120022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 183655102500 + 36366108601 = 428550^2 + 190699^2 .

It is a cyclic number.

It is not a de Polignac number, because 220021211101 - 2¹¹ = 220021209053 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 (220021241101) 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 3 ways as a sum of consecutive naturals, for example, 583870 + ... + 883711.

It is an arithmetic number, because the mean of its divisors is an integer number (55005707151).

Almost surely, 2^220021211101 is an apocalyptic number.

It is an amenable number.

220021211101 is a deficient number, since it is larger than the sum of its proper divisors (1617503).

220021211101 is a wasteful number, since it uses less digits than its factorization.

220021211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617502.

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

Adding to 220021211101 its reverse (101112120022), we get a palindrome (321133331123).

The spelling of 220021211101 in words is "two hundred twenty billion, twenty-one million, two hundred eleven thousand, one hundred one".