221212101002 has 64 divisors (see below), whose sum is σ = 355373568000. Its totient is φ = 102979356480.

The previous prime is 221212100981. The next prime is 221212101023. The reversal of 221212101002 is 200101212122.

It is an interprime number because it is at equal distance from previous prime (221212100981) and next prime (221212101023).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242822927 + ... + 242823837.

It is an arithmetic number, because the mean of its divisors is an integer number (5552712000).

Almost surely, 2^221212101002 is an apocalyptic number.

221212101002 is a deficient number, since it is larger than the sum of its proper divisors (134161466998).

221212101002 is a wasteful number, since it uses less digits than its factorization.

221212101002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491.

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

Adding to 221212101002 its reverse (200101212122), we get a palindrome (421313313124).

The spelling of 221212101002 in words is "two hundred twenty-one billion, two hundred twelve million, one hundred one thousand, two".