221220020102 has 16 divisors (see below), whose sum is σ = 332372421360. Its totient is φ = 110429349888.

The previous prime is 221220020083. The next prime is 221220020117. The reversal of 221220020102 is 201020022122.

It is a super-3 number, since 3×221220020102³ (a number of 35 digits) contains 333 as substring.

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, 3332774 + ... + 3398502.

It is an arithmetic number, because the mean of its divisors is an integer number (20773276335).

Almost surely, 2^221220020102 is an apocalyptic number.

221220020102 is a deficient number, since it is larger than the sum of its proper divisors (111152401258).

221220020102 is a wasteful number, since it uses less digits than its factorization.

221220020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68455.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221220020102 its reverse (201020022122), we get a palindrome (422240042224).

The spelling of 221220020102 in words is "two hundred twenty-one billion, two hundred twenty million, twenty thousand, one hundred two".