71021001202102 has 24 divisors (see below), whose sum is σ = 125082572038344. Its totient is φ = 30153108650112.

The previous prime is 71021001202027. The next prime is 71021001202103. The reversal of 71021001202102 is 20120210012017.

It is a super-2 number, since 2×71021001202102² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71021001202102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71021001202103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3386457243 + ... + 3386478214.

It is an arithmetic number, because the mean of its divisors is an integer number (5211773834931).

Almost surely, 2^{71021001202102} is an apocalyptic number.

71021001202102 is a deficient number, since it is larger than the sum of its proper divisors (54061570836242).

71021001202102 is a wasteful number, since it uses less digits than its factorization.

71021001202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6772935580 (or 6772935573 counting only the distinct ones).

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

Adding to 71021001202102 its reverse (20120210012017), we get a palindrome (91141211214119).

The spelling of 71021001202102 in words is "seventy-one trillion, twenty-one billion, one million, two hundred two thousand, one hundred two".