20100001020220 has 24 divisors (see below), whose sum is σ = 46047275065008. Its totient is φ = 7309091280000.

The previous prime is 20100001020109. The next prime is 20100001020223. The reversal of 20100001020220 is 2202010000102.

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 = 20100001020197 and 20100001020206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100001020223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45681820281 + ... + 45681820720.

It is an arithmetic number, because the mean of its divisors is an integer number (1918636461042).

Almost surely, 2^{20100001020220} is an apocalyptic number.

20100001020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100001020220 is an abundant number, since it is smaller than the sum of its proper divisors (25947274044788).

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

20100001020220 is a wasteful number, since it uses less digits than its factorization.

20100001020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91363641021 (or 91363641019 counting only the distinct ones).

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

Adding to 20100001020220 its reverse (2202010000102), we get a palindrome (22302011020322).

The spelling of 20100001020220 in words is "twenty trillion, one hundred billion, one million, twenty thousand, two hundred twenty".