221222010001211 has 16 divisors (see below), whose sum is σ = 223729190630400. Its totient is φ = 218719478016000.

The previous prime is 221222010001133. The next prime is 221222010001303. The reversal of 221222010001211 is 112100010222122.

221222010001211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221222010001211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221222010001211.

It is not an unprimeable number, because it can be changed into a prime (221222010001511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1984229510 + ... + 1984340996.

It is an arithmetic number, because the mean of its divisors is an integer number (13983074414400).

Almost surely, 2^{221222010001211} is an apocalyptic number.

221222010001211 is a deficient number, since it is larger than the sum of its proper divisors (2507180629189).

221222010001211 is a wasteful number, since it uses less digits than its factorization.

221222010001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132134.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221222010001211 its reverse (112100010222122), we get a palindrome (333322020223333).

The spelling of 221222010001211 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, ten million, one thousand, two hundred eleven".