1020111001819 has 64 divisors (see below), whose sum is σ = 1330041323520. Its totient is φ = 760307264640.

The previous prime is 1020111001817. The next prime is 1020111001883. The reversal of 1020111001819 is 9181001110201.

It is not a de Polignac number, because 1020111001819 - 2¹ = 1020111001817 is a prime.

It is a super-2 number, since 2×1020111001819² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020111001793 and 1020111001802.

It is not an unprimeable number, because it can be changed into a prime (1020111001817) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 154395214 + ... + 154401820.

It is an arithmetic number, because the mean of its divisors is an integer number (20781895680).

Almost surely, 2^{1020111001819} is an apocalyptic number.

1020111001819 is a deficient number, since it is larger than the sum of its proper divisors (309930321701).

1020111001819 is a wasteful number, since it uses less digits than its factorization.

1020111001819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7760.

The product of its (nonzero) digits is 144, while the sum is 25.

The spelling of 1020111001819 in words is "one trillion, twenty billion, one hundred eleven million, one thousand, eight hundred nineteen".