221012020101 has 8 divisors (see below), whose sum is σ = 294699201280. Its totient is φ = 147333092832.

The previous prime is 221012020051. The next prime is 221012020171. The reversal of 221012020101 is 101020210122.

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

It is not a de Polignac number, because 221012020101 - 2¹⁰ = 221012019077 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 (221012020171) 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, 2000725 + ... + 2108298.

It is an arithmetic number, because the mean of its divisors is an integer number (36837400160).

Almost surely, 2^221012020101 is an apocalyptic number.

It is an amenable number.

221012020101 is a deficient number, since it is larger than the sum of its proper divisors (73687181179).

221012020101 is a wasteful number, since it uses less digits than its factorization.

221012020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126955.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221012020101 its reverse (101020210122), we get a palindrome (322032230223).

The spelling of 221012020101 in words is "two hundred twenty-one billion, twelve million, twenty thousand, one hundred one".