211221021001013 has 8 divisors (see below), whose sum is σ = 211254752567040. Its totient is φ = 211187291484960.

The previous prime is 211221021000937. The next prime is 211221021001043. The reversal of 211221021001013 is 310100120122112.

It is a happy number.

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 211221021001013 - 2⁴² = 206822974489909 is a prime.

It is a super-2 number, since 2×211221021001013² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211221021000982 and 211221021001000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221021001043) 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, 212606918 + ... + 213598088.

It is an arithmetic number, because the mean of its divisors is an integer number (26406844070880).

Almost surely, 2^{211221021001013} is an apocalyptic number.

It is an amenable number.

211221021001013 is a deficient number, since it is larger than the sum of its proper divisors (33731566027).

211221021001013 is an equidigital number, since it uses as much as digits as its factorization.

211221021001013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024987.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 211221021001013 its reverse (310100120122112), we get a palindrome (521321141123125).

The spelling of 211221021001013 in words is "two hundred eleven trillion, two hundred twenty-one billion, twenty-one million, one thousand, thirteen".