211221122013301 has 4 divisors (see below), whose sum is σ = 211232262974400. Its totient is φ = 211209981052204.

The previous prime is 211221122013283. The next prime is 211221122013359. The reversal of 211221122013301 is 103310221122112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211221122013301 - 2⁵ = 211221122013269 is a prime.

It is a super-2 number, since 2×211221122013301² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221122013371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5570452111 + ... + 5570490028.

It is an arithmetic number, because the mean of its divisors is an integer number (52808065743600).

Almost surely, 2^{211221122013301} is an apocalyptic number.

It is an amenable number.

211221122013301 is a deficient number, since it is larger than the sum of its proper divisors (11140961099).

211221122013301 is a wasteful number, since it uses less digits than its factorization.

211221122013301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11140961098.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 211221122013301 its reverse (103310221122112), we get a palindrome (314531343135413).

The spelling of 211221122013301 in words is "two hundred eleven trillion, two hundred twenty-one billion, one hundred twenty-two million, thirteen thousand, three hundred one".