202021211011871 has 2 divisors, whose sum is σ = 202021211011872. Its totient is φ = 202021211011870.

The previous prime is 202021211011853. The next prime is 202021211011901. The reversal of 202021211011871 is 178110112120202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202021211011871 - 2¹⁸ = 202021210749727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202021211011171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010605505935 + 101010605505936.

It is an arithmetic number, because the mean of its divisors is an integer number (101010605505936).

Almost surely, 2^{202021211011871} is an apocalyptic number.

202021211011871 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021211011871 is an equidigital number, since it uses as much as digits as its factorization.

202021211011871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 29.

The spelling of 202021211011871 in words is "two hundred two trillion, twenty-one billion, two hundred eleven million, eleven thousand, eight hundred seventy-one".