221211201010011 has 8 divisors (see below), whose sum is σ = 295798263023424. Its totient is φ = 147049136501640.

The previous prime is 221211201010003. The next prime is 221211201010043. The reversal of 221211201010011 is 110010102112122.

It is a happy number.

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

It is not a de Polignac number, because 221211201010011 - 2³ = 221211201010003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221211201010081) 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, 106249375045 + ... + 106249377126.

It is an arithmetic number, because the mean of its divisors is an integer number (36974782877928).

Almost surely, 2^{221211201010011} is an apocalyptic number.

221211201010011 is a deficient number, since it is larger than the sum of its proper divisors (74587062013413).

221211201010011 is a wasteful number, since it uses less digits than its factorization.

221211201010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212498752521.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221211201010011 its reverse (110010102112122), we get a palindrome (331221303122133).

The spelling of 221211201010011 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred one million, ten thousand, eleven".