1000111001020 has 24 divisors (see below), whose sum is σ = 2100566790000. Its totient is φ = 399980840832.

The previous prime is 1000111001003. The next prime is 1000111001063. The reversal of 1000111001020 is 201001110001.

It is a super-2 number, since 2×1000111001020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1000111000994 and 1000111001012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3843345 + ... + 4095304.

It is an arithmetic number, because the mean of its divisors is an integer number (87523616250).

Almost surely, 2^{1000111001020} is an apocalyptic number.

1000111001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000111001020 is an abundant number, since it is smaller than the sum of its proper divisors (1100455788980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000111001020 is a wasteful number, since it uses less digits than its factorization.

1000111001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7944957 (or 7944955 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 1000111001020 its reverse (201001110001), we get a palindrome (1201112111021).

The spelling of 1000111001020 in words is "one trillion, one hundred eleven million, one thousand, twenty".