211221301023113 has 4 divisors (see below), whose sum is σ = 211221345338640. Its totient is φ = 211221256707588.

The previous prime is 211221301023053. The next prime is 211221301023121. The reversal of 211221301023113 is 311320103122112.

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 211221301023113 - 2¹² = 211221301019017 is a prime.

It is a super-2 number, since 2×211221301023113² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211221301023143) 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, 14009495 + ... + 24873852.

It is an arithmetic number, because the mean of its divisors is an integer number (52805336334660).

Almost surely, 2^{211221301023113} is an apocalyptic number.

It is an amenable number.

211221301023113 is a deficient number, since it is larger than the sum of its proper divisors (44315527).

211221301023113 is an equidigital number, since it uses as much as digits as its factorization.

211221301023113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44315526.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 211221301023113 its reverse (311320103122112), we get a palindrome (522541404145225).

The spelling of 211221301023113 in words is "two hundred eleven trillion, two hundred twenty-one billion, three hundred one million, twenty-three thousand, one hundred thirteen".