1020019201111 has 4 divisors (see below), whose sum is σ = 1030118401224. Its totient is φ = 1009920001000.

The previous prime is 1020019201079. The next prime is 1020019201151. The reversal of 1020019201111 is 1111029100201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020019201111 - 2⁵ = 1020019201079 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 (1020019201151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5049599905 + ... + 5049600106.

It is an arithmetic number, because the mean of its divisors is an integer number (257529600306).

Almost surely, 2^{1020019201111} is an apocalyptic number.

1020019201111 is a deficient number, since it is larger than the sum of its proper divisors (10099200113).

1020019201111 is a wasteful number, since it uses less digits than its factorization.

1020019201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10099200112.

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

The spelling of 1020019201111 in words is "one trillion, twenty billion, nineteen million, two hundred one thousand, one hundred eleven".