221211111212002 has 16 divisors (see below), whose sum is σ = 343259912960640. Its totient is φ = 106791168938832.

The previous prime is 221211111211999. The next prime is 221211111212083. The reversal of 221211111212002 is 200212111112122.

It is a happy 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, 8661223 + ... + 22747285.

It is an arithmetic number, because the mean of its divisors is an integer number (21453744560040).

Almost surely, 2^{221211111212002} is an apocalyptic number.

221211111212002 is a deficient number, since it is larger than the sum of its proper divisors (122048801748638).

221211111212002 is a wasteful number, since it uses less digits than its factorization.

221211111212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14356857.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221211111212002 its reverse (200212111112122), we get a palindrome (421423222324124).

The spelling of 221211111212002 in words is "two hundred twenty-one trillion, two hundred eleven billion, one hundred eleven million, two hundred twelve thousand, two".