10202143219991 has 2 divisors, whose sum is σ = 10202143219992. Its totient is φ = 10202143219990.

The previous prime is 10202143219973. The next prime is 10202143220021. The reversal of 10202143219991 is 19991234120201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10202143219991 - 2²⁶ = 10202076111127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202143219091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101071609995 + 5101071609996.

It is an arithmetic number, because the mean of its divisors is an integer number (5101071609996).

Almost surely, 2^{10202143219991} is an apocalyptic number.

10202143219991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202143219991 is an equidigital number, since it uses as much as digits as its factorization.

10202143219991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 44.

The spelling of 10202143219991 in words is "ten trillion, two hundred two billion, one hundred forty-three million, two hundred nineteen thousand, nine hundred ninety-one".