1020020111010 has 32 divisors (see below), whose sum is σ = 2720053630080. Its totient is φ = 272005362864.

The previous prime is 1020020110973. The next prime is 1020020111053. The reversal of 1020020111010 is 101110200201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1020020110983 and 1020020111001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1888925862 + ... + 1888926401.

It is an arithmetic number, because the mean of its divisors is an integer number (85001675940).

Almost surely, 2^{1020020111010} is an apocalyptic number.

1020020111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020020111010 is an abundant number, since it is smaller than the sum of its proper divisors (1700033519070).

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

1020020111010 is a wasteful number, since it uses less digits than its factorization.

1020020111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777852279 (or 3777852273 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1020020111010 its reverse (101110200201), we get a palindrome (1121130311211).

The spelling of 1020020111010 in words is "one trillion, twenty billion, twenty million, one hundred eleven thousand, ten".