221504350101 has 8 divisors (see below), whose sum is σ = 312712023744. Its totient is φ = 138983121600.

The previous prime is 221504350063. The next prime is 221504350139. The reversal of 221504350101 is 101053405122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (221504350063) and next prime (221504350139).

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

It is not a de Polignac number, because 221504350101 - 2⁹ = 221504349589 is a prime.

It is a super-2 number, since 2×221504350101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221504350141) 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, 2171611225 + ... + 2171611326.

It is an arithmetic number, because the mean of its divisors is an integer number (39089002968).

Almost surely, 2^221504350101 is an apocalyptic number.

It is an amenable number.

221504350101 is a deficient number, since it is larger than the sum of its proper divisors (91207673643).

221504350101 is a wasteful number, since it uses less digits than its factorization.

221504350101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4343222571.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 221504350101 its reverse (101053405122), we get a palindrome (322557755223).

The spelling of 221504350101 in words is "two hundred twenty-one billion, five hundred four million, three hundred fifty thousand, one hundred one".