71011011202121 has 8 divisors (see below), whose sum is σ = 71404003577088. Its totient is φ = 70618026150000.

The previous prime is 71011011202031. The next prime is 71011011202169. The reversal of 71011011202121 is 12120211011017.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71011011202121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71011011202093 and 71011011202102.

It is not an unprimeable number, because it can be changed into a prime (71011011204121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18223496 + ... + 21774246.

It is an arithmetic number, because the mean of its divisors is an integer number (8925500447136).

Almost surely, 2^{71011011202121} is an apocalyptic number.

It is an amenable number.

71011011202121 is a deficient number, since it is larger than the sum of its proper divisors (392992374967).

71011011202121 is a wasteful number, since it uses less digits than its factorization.

71011011202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661423.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 71011011202121 its reverse (12120211011017), we get a palindrome (83131222213138).

The spelling of 71011011202121 in words is "seventy-one trillion, eleven billion, eleven million, two hundred two thousand, one hundred twenty-one".