221222012102 has 16 divisors (see below), whose sum is σ = 408409868832. Its totient is φ = 87516400320.

The previous prime is 221222012083. The next prime is 221222012117. The reversal of 221222012102 is 201210222122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607752599 + ... + 607752962.

It is an arithmetic number, because the mean of its divisors is an integer number (25525616802).

Almost surely, 2^221222012102 is an apocalyptic number.

221222012102 is a deficient number, since it is larger than the sum of its proper divisors (187187856730).

221222012102 is a wasteful number, since it uses less digits than its factorization.

221222012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215505583.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221222012102 its reverse (201210222122), we get a palindrome (422432234224).

The spelling of 221222012102 in words is "two hundred twenty-one billion, two hundred twenty-two million, twelve thousand, one hundred two".