72411201462221 has 2 divisors, whose sum is σ = 72411201462222. Its totient is φ = 72411201462220.

The previous prime is 72411201462217. The next prime is 72411201462251. The reversal of 72411201462221 is 12226410211427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71167951932100 + 1243249530121 = 8436110^2 + 1115011^2 .

It is a cyclic number.

It is not a de Polignac number, because 72411201462221 - 2² = 72411201462217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72411201462211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36205600731110 + 36205600731111.

It is an arithmetic number, because the mean of its divisors is an integer number (36205600731111).

Almost surely, 2^{72411201462221} is an apocalyptic number.

It is an amenable number.

72411201462221 is a deficient number, since it is larger than the sum of its proper divisors (1).

72411201462221 is an equidigital number, since it uses as much as digits as its factorization.

72411201462221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 35.

Adding to 72411201462221 its reverse (12226410211427), we get a palindrome (84637611673648).

The spelling of 72411201462221 in words is "seventy-two trillion, four hundred eleven billion, two hundred one million, four hundred sixty-two thousand, two hundred twenty-one".