221222221002102 has 16 divisors (see below), whose sum is σ = 461681156874240. Its totient is φ = 70534621189032.

The previous prime is 221222221002091. The next prime is 221222221002161. The reversal of 221222221002102 is 201200122222122.

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, 801529786102 + ... + 801529786377.

It is an arithmetic number, because the mean of its divisors is an integer number (28855072304640).

Almost surely, 2^{221222221002102} is an apocalyptic number.

221222221002102 is an abundant number, since it is smaller than the sum of its proper divisors (240458935872138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221222221002102 is a wasteful number, since it uses less digits than its factorization.

221222221002102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603059572507.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221222221002102 its reverse (201200122222122), we get a palindrome (422422343224224).

The spelling of 221222221002102 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, two hundred twenty-one million, two thousand, one hundred two".