1211210000071 has 16 divisors (see below), whose sum is σ = 1298726789184. Its totient is φ = 1125577621504.

The previous prime is 1211210000069. The next prime is 1211210000107. The reversal of 1211210000071 is 1700000121121.

It is a cyclic number.

It is not a de Polignac number, because 1211210000071 - 2¹ = 1211210000069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211210000971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693466 + ... + 1703911.

It is an arithmetic number, because the mean of its divisors is an integer number (81170424324).

Almost surely, 2^{1211210000071} is an apocalyptic number.

1211210000071 is a deficient number, since it is larger than the sum of its proper divisors (87516789113).

1211210000071 is a wasteful number, since it uses less digits than its factorization.

1211210000071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397770.

The product of its (nonzero) digits is 28, while the sum is 16.

Adding to 1211210000071 its reverse (1700000121121), we get a palindrome (2911210121192).

The spelling of 1211210000071 in words is "one trillion, two hundred eleven billion, two hundred ten million, seventy-one", and thus it is an aban number.