1020001020220 has 96 divisors (see below), whose sum is σ = 2636810886528. Its totient is φ = 322752218112.

The previous prime is 1020001020209. The next prime is 1020001020223. The reversal of 1020001020220 is 220201000201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1020001020197 and 1020001020206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020001020223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10063314 + ... + 10164166.

It is an arithmetic number, because the mean of its divisors is an integer number (27466780068).

Almost surely, 2^{1020001020220} is an apocalyptic number.

1020001020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020001020220 is an abundant number, since it is smaller than the sum of its proper divisors (1616809866308).

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

1020001020220 is a wasteful number, since it uses less digits than its factorization.

1020001020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106439 (or 106437 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1020001020220 its reverse (220201000201), we get a palindrome (1240202020421).

The spelling of 1020001020220 in words is "one trillion, twenty billion, one million, twenty thousand, two hundred twenty".