1019091020101 has 32 divisors (see below), whose sum is σ = 1339237555200. Its totient is φ = 751283527680.

The previous prime is 1019091020033. The next prime is 1019091020119. The reversal of 1019091020101 is 1010201909101.

It is not a de Polignac number, because 1019091020101 - 2²⁷ = 1018956802373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019091020131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 609861 + ... + 1552453.

It is an arithmetic number, because the mean of its divisors is an integer number (41851173600).

Almost surely, 2^{1019091020101} is an apocalyptic number.

1019091020101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1019091020101 is a deficient number, since it is larger than the sum of its proper divisors (320146535099).

1019091020101 is a wasteful number, since it uses less digits than its factorization.

1019091020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943369.

The product of its (nonzero) digits is 162, while the sum is 25.

Adding to 1019091020101 its reverse (1010201909101), we get a palindrome (2029292929202).

The spelling of 1019091020101 in words is "one trillion, nineteen billion, ninety-one million, twenty thousand, one hundred one".