221211022002 has 8 divisors (see below), whose sum is σ = 442422044016. Its totient is φ = 73737007332.

The previous prime is 221211021947. The next prime is 221211022013. The reversal of 221211022002 is 200220112122.

It is a sphenic number, since it is the product of 3 distinct primes.

221211022002 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18434251828 + ... + 18434251839.

It is an arithmetic number, because the mean of its divisors is an integer number (55302755502).

Almost surely, 2^221211022002 is an apocalyptic number.

221211022002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221211022002 is a wasteful number, since it uses less digits than its factorization.

221211022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36868503672.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221211022002 its reverse (200220112122), we get a palindrome (421431134124).

The spelling of 221211022002 in words is "two hundred twenty-one billion, two hundred eleven million, twenty-two thousand, two".