202121110001071 has 2 divisors, whose sum is σ = 202121110001072. Its totient is φ = 202121110001070.

The previous prime is 202121110001003. The next prime is 202121110001093. The reversal of 202121110001071 is 170100011121202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202121110001071 - 2⁹ = 202121110000559 is a prime.

It is a super-2 number, since 2×202121110001071² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202121110001971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060555000535 + 101060555000536.

It is an arithmetic number, because the mean of its divisors is an integer number (101060555000536).

Almost surely, 2^{202121110001071} is an apocalyptic number.

202121110001071 is a deficient number, since it is larger than the sum of its proper divisors (1).

202121110001071 is an equidigital number, since it uses as much as digits as its factorization.

202121110001071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 202121110001071 its reverse (170100011121202), we get a palindrome (372221121122273).

The spelling of 202121110001071 in words is "two hundred two trillion, one hundred twenty-one billion, one hundred ten million, one thousand, seventy-one".