211321440302401 has 8 divisors (see below), whose sum is σ = 248265748047744. Its totient is φ = 177332677176720.

The previous prime is 211321440302387. The next prime is 211321440302407. The reversal of 211321440302401 is 104203044123112.

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 211321440302401 - 2⁵ = 211321440302369 is a prime.

It is a super-2 number, since 2×211321440302401² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211321440302401.

It is not an unprimeable number, because it can be changed into a prime (211321440302407) 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, 738886154761 + ... + 738886155046.

It is an arithmetic number, because the mean of its divisors is an integer number (31033218505968).

Almost surely, 2^{211321440302401} is an apocalyptic number.

It is an amenable number.

211321440302401 is a deficient number, since it is larger than the sum of its proper divisors (36944307745343).

211321440302401 is a wasteful number, since it uses less digits than its factorization.

211321440302401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477772309831.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 211321440302401 its reverse (104203044123112), we get a palindrome (315524484425513).

The spelling of 211321440302401 in words is "two hundred eleven trillion, three hundred twenty-one billion, four hundred forty million, three hundred two thousand, four hundred one".