221212210101011 has 8 divisors (see below), whose sum is σ = 222357462694224. Its totient is φ = 220068836513280.

The previous prime is 221212210100927. The next prime is 221212210101059. The reversal of 221212210101011 is 110101012212122.

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

It is a cyclic number.

It is not a de Polignac number, because 221212210101011 - 2¹⁰ = 221212210099987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221212212101011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469515305 + ... + 469986218.

It is an arithmetic number, because the mean of its divisors is an integer number (27794682836778).

Almost surely, 2^{221212210101011} is an apocalyptic number.

221212210101011 is a deficient number, since it is larger than the sum of its proper divisors (1145252593213).

221212210101011 is an equidigital number, since it uses as much as digits as its factorization.

221212210101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939502741.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221212210101011 its reverse (110101012212122), we get a palindrome (331313222313133).

The spelling of 221212210101011 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred ten million, one hundred one thousand, eleven".