70221212101 has 2 divisors, whose sum is σ = 70221212102. Its totient is φ = 70221212100.

The previous prime is 70221212077. The next prime is 70221212167. The reversal of 70221212101 is 10121212207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68175821025 + 2045391076 = 261105^2 + 45226^2 .

It is a cyclic number.

It is not a de Polignac number, because 70221212101 - 2⁵ = 70221212069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70221215101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35110606050 + 35110606051.

It is an arithmetic number, because the mean of its divisors is an integer number (35110606051).

Almost surely, 2^70221212101 is an apocalyptic number.

It is an amenable number.

70221212101 is a deficient number, since it is larger than the sum of its proper divisors (1).

70221212101 is an equidigital number, since it uses as much as digits as its factorization.

70221212101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 70221212101 its reverse (10121212207), we get a palindrome (80342424308).

The spelling of 70221212101 in words is "seventy billion, two hundred twenty-one million, two hundred twelve thousand, one hundred one".