2021011101109 has 16 divisors (see below), whose sum is σ = 2713525395840. Its totient is φ = 1453674317760.

The previous prime is 2021011101047. The next prime is 2021011101113. The reversal of 2021011101109 is 9011011101202.

It is not a de Polignac number, because 2021011101109 - 2⁷ = 2021011100981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021011101119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009495054 + ... + 1009497055.

It is an arithmetic number, because the mean of its divisors is an integer number (169595337240).

Almost surely, 2^{2021011101109} is an apocalyptic number.

It is an amenable number.

2021011101109 is a deficient number, since it is larger than the sum of its proper divisors (692514294731).

2021011101109 is a wasteful number, since it uses less digits than its factorization.

2021011101109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018992140.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 2021011101109 in words is "two trillion, twenty-one billion, eleven million, one hundred one thousand, one hundred nine".