20021201101 has 8 divisors (see below), whose sum is σ = 21842335008. Its totient is φ = 18200238000.

The previous prime is 20021201093. The next prime is 20021201111. The reversal of 20021201101 is 10110212002.

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 20021201101 - 2³ = 20021201093 is a prime.

It is a super-2 number, since 2×20021201101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021201111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428931 + ... + 473311.

It is an arithmetic number, because the mean of its divisors is an integer number (2730291876).

Almost surely, 2^20021201101 is an apocalyptic number.

It is an amenable number.

20021201101 is a deficient number, since it is larger than the sum of its proper divisors (1821133907).

20021201101 is a wasteful number, since it uses less digits than its factorization.

20021201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85403.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20021201101 its reverse (10110212002), we get a palindrome (30131413103).

It can be divided in two parts, 20021 and 201101, that added together give a palindrome (221122).

The spelling of 20021201101 in words is "twenty billion, twenty-one million, two hundred one thousand, one hundred one".