70011002221 has 2 divisors, whose sum is σ = 70011002222. Its totient is φ = 70011002220.

The previous prime is 70011002219. The next prime is 70011002273. The reversal of 70011002221 is 12220011007.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69553512900 + 457489321 = 263730^2 + 21389^2 .

It is an emirp because it is prime and its reverse (12220011007) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70011002221 - 2¹ = 70011002219 is a prime.

Together with 70011002219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 70011002195 and 70011002204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70011002921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35005501110 + 35005501111.

It is an arithmetic number, because the mean of its divisors is an integer number (35005501111).

Almost surely, 2^70011002221 is an apocalyptic number.

It is an amenable number.

70011002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

70011002221 is an equidigital number, since it uses as much as digits as its factorization.

70011002221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

Adding to 70011002221 its reverse (12220011007), we get a palindrome (82231013228).

The spelling of 70011002221 in words is "seventy billion, eleven million, two thousand, two hundred twenty-one".