101020999999 has 2 divisors, whose sum is σ = 101021000000. Its totient is φ = 101020999998.

The previous prime is 101020999991. The next prime is 101021000023. The reversal of 101020999999 is 999999020101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101020999999 - 2³ = 101020999991 is a prime.

101020999999 is a modest number, since divided by 999999 gives 101020 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101020999991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510499999 + 50510500000.

It is an arithmetic number, because the mean of its divisors is an integer number (50510500000).

Almost surely, 2^101020999999 is an apocalyptic number.

101020999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

101020999999 is an equidigital number, since it uses as much as digits as its factorization.

101020999999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1062882, while the sum is 58.

The spelling of 101020999999 in words is "one hundred one billion, twenty million, nine hundred ninety-nine thousand, nine hundred ninety-nine".