2021001000220 has 48 divisors (see below), whose sum is σ = 4343363640000. Its totient is φ = 789702359040.

The previous prime is 2021001000217. The next prime is 2021001000229. The reversal of 2021001000220 is 220001001202.

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 = 2021001000197 and 2021001000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021001000229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6373845 + ... + 6683404.

It is an arithmetic number, because the mean of its divisors is an integer number (90486742500).

Almost surely, 2^{2021001000220} is an apocalyptic number.

2021001000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021001000220 is an abundant number, since it is smaller than the sum of its proper divisors (2322362639780).

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

2021001000220 is a wasteful number, since it uses less digits than its factorization.

2021001000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13057438 (or 13057436 counting only the distinct ones).

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

Adding to 2021001000220 its reverse (220001001202), we get a palindrome (2241002001422).

The spelling of 2021001000220 in words is "two trillion, twenty-one billion, one million, two hundred twenty", and thus it is an aban number.