221001121101 has 8 divisors (see below), whose sum is σ = 302632165984. Its totient is φ = 143352078480.

The previous prime is 221001121079. The next prime is 221001121141. The reversal of 221001121101 is 101121100122.

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

It is not a de Polignac number, because 221001121101 - 2²⁹ = 220464250189 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 (221001121141) 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, 995500435 + ... + 995500656.

It is an arithmetic number, because the mean of its divisors is an integer number (37829020748).

Almost surely, 2^221001121101 is an apocalyptic number.

It is an amenable number.

221001121101 is a deficient number, since it is larger than the sum of its proper divisors (81631044883).

221001121101 is a wasteful number, since it uses less digits than its factorization.

221001121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991001131.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 221001121101 its reverse (101121100122), we get a palindrome (322122221223).

The spelling of 221001121101 in words is "two hundred twenty-one billion, one million, one hundred twenty-one thousand, one hundred one".