221201102102 has 8 divisors (see below), whose sum is σ = 332593543800. Its totient is φ = 110336587504.

The previous prime is 221201102099. The next prime is 221201102123. The reversal of 221201102102 is 201201102122.

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

It is a super-2 number, since 2×221201102102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131980727 + ... + 131982402.

It is an arithmetic number, because the mean of its divisors is an integer number (41574192975).

Almost surely, 2^221201102102 is an apocalyptic number.

221201102102 is a deficient number, since it is larger than the sum of its proper divisors (111392441698).

221201102102 is a wasteful number, since it uses less digits than its factorization.

221201102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263963550.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221201102102 its reverse (201201102122), we get a palindrome (422402204224).

The spelling of 221201102102 in words is "two hundred twenty-one billion, two hundred one million, one hundred two thousand, one hundred two".