2101001000220 has 48 divisors (see below), whose sum is σ = 6536447557920. Its totient is φ = 560266933248.

The previous prime is 2101001000191. The next prime is 2101001000233. The reversal of 2101001000220 is 220001001012.

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

It is a congruent number.

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, 1945370757 + ... + 1945371836.

It is an arithmetic number, because the mean of its divisors is an integer number (136175990790).

Almost surely, 2^{2101001000220} is an apocalyptic number.

2101001000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101001000220 is an abundant number, since it is smaller than the sum of its proper divisors (4435446557700).

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

2101001000220 is a wasteful number, since it uses less digits than its factorization.

2101001000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890742611 (or 3890742603 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2101001000220 its reverse (220001001012), we get a palindrome (2321002001232).

The spelling of 2101001000220 in words is "two trillion, one hundred one billion, one million, two hundred twenty", and thus it is an aban number.