221401022101 has 16 divisors (see below), whose sum is σ = 255351156480. Its totient is φ = 188037982080.

The previous prime is 221401022093. The next prime is 221401022119. The reversal of 221401022101 is 101220104122.

It is a cyclic number.

It is not a de Polignac number, because 221401022101 - 2³ = 221401022093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221401022191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113961 + ... + 675121.

It is an arithmetic number, because the mean of its divisors is an integer number (15959447280).

Almost surely, 2^221401022101 is an apocalyptic number.

It is an amenable number.

221401022101 is a deficient number, since it is larger than the sum of its proper divisors (33950134379).

221401022101 is a wasteful number, since it uses less digits than its factorization.

221401022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561684.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221401022101 its reverse (101220104122), we get a palindrome (322621126223).

The spelling of 221401022101 in words is "two hundred twenty-one billion, four hundred one million, twenty-two thousand, one hundred one".