20021102201 has 8 divisors (see below), whose sum is σ = 20079850560.
Its totient is φ = 19962430992.
The previous prime is 20021102197. The next prime is 20021102203. The reversal of 20021102201 is 10220112002.
It is a happy number.
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 20021102201 - 22 = 20021102197 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (20021102203) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522566 + ... + 559568.
It is an arithmetic number, because the mean of its divisors is an integer number (2509981320).
Almost surely, 220021102201 is an apocalyptic number.
It is an amenable number.
20021102201 is a deficient number, since it is larger than the sum of its proper divisors (58748359).
20021102201 is a wasteful number, since it uses less digits than its factorization.
20021102201 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 38575.
The product of its (nonzero) digits is 16, while the sum is 11.
Adding to 20021102201 its reverse (10220112002), we get a palindrome (30241214203).
The spelling of 20021102201 in words is "twenty billion, twenty-one million, one hundred two thousand, two hundred one".