2102021210071 has 2 divisors, whose sum is σ = 2102021210072. Its totient is φ = 2102021210070.

The previous prime is 2102021210053. The next prime is 2102021210129. The reversal of 2102021210071 is 1700121202012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102021210071 - 2³⁷ = 1964582256599 is a prime.

It is a super-2 number, since 2×2102021210071² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102021210011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051010605035 + 1051010605036.

It is an arithmetic number, because the mean of its divisors is an integer number (1051010605036).

Almost surely, 2^{2102021210071} is an apocalyptic number.

2102021210071 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102021210071 is an equidigital number, since it uses as much as digits as its factorization.

2102021210071 is an evil number, because the sum of its binary digits is even.

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

Adding to 2102021210071 its reverse (1700121202012), we get a palindrome (3802142412083).

The spelling of 2102021210071 in words is "two trillion, one hundred two billion, twenty-one million, two hundred ten thousand, seventy-one".