221266225102 has 32 divisors (see below), whose sum is σ = 367140239424. Its totient is φ = 99349286400.

The previous prime is 221266225091. The next prime is 221266225109. The reversal of 221266225102 is 201522662122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221266225109) 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, 11371702 + ... + 11391142.

It is an arithmetic number, because the mean of its divisors is an integer number (11473132482).

Almost surely, 2^221266225102 is an apocalyptic number.

221266225102 is a deficient number, since it is larger than the sum of its proper divisors (145874014322).

221266225102 is a wasteful number, since it uses less digits than its factorization.

221266225102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31324.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 221266225102 its reverse (201522662122), we get a palindrome (422788887224).

The spelling of 221266225102 in words is "two hundred twenty-one billion, two hundred sixty-six million, two hundred twenty-five thousand, one hundred two".