1021112101019 has 4 divisors (see below), whose sum is σ = 1081177518744. Its totient is φ = 961046683296.

The previous prime is 1021112100941. The next prime is 1021112101039. The reversal of 1021112101019 is 9101012111201.

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 1021112101019 - 2²⁰ = 1021111052443 is a prime.

It is a super-2 number, since 2×1021112101019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021112101039) 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, 30032708837 + ... + 30032708870.

It is an arithmetic number, because the mean of its divisors is an integer number (270294379686).

Almost surely, 2^{1021112101019} is an apocalyptic number.

1021112101019 is a deficient number, since it is larger than the sum of its proper divisors (60065417725).

1021112101019 is an equidigital number, since it uses as much as digits as its factorization.

1021112101019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60065417724.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 1021112101019 in words is "one trillion, twenty-one billion, one hundred twelve million, one hundred one thousand, nineteen".