70102211021 has 2 divisors, whose sum is σ = 70102211022. Its totient is φ = 70102211020.

The previous prime is 70102210999. The next prime is 70102211087. The reversal of 70102211021 is 12011220107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60473695396 + 9628515625 = 245914^2 + 98125^2 .

It is an emirp because it is prime and its reverse (12011220107) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70102211021 - 2¹⁰ = 70102209997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70102211321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35051105510 + 35051105511.

It is an arithmetic number, because the mean of its divisors is an integer number (35051105511).

Almost surely, 2^70102211021 is an apocalyptic number.

It is an amenable number.

70102211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

70102211021 is an equidigital number, since it uses as much as digits as its factorization.

70102211021 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 17.

Adding to 70102211021 its reverse (12011220107), we get a palindrome (82113431128).

The spelling of 70102211021 in words is "seventy billion, one hundred two million, two hundred eleven thousand, twenty-one".