2100001202220 has 48 divisors (see below), whose sum is σ = 5934956686848. Its totient is φ = 554766671040.

The previous prime is 2100001202219. The next prime is 2100001202281. The reversal of 2100001202220 is 222021000012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2100001202196 and 2100001202205.

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, 163545076 + ... + 163557915.

It is an arithmetic number, because the mean of its divisors is an integer number (123644930976).

Almost surely, 2^{2100001202220} is an apocalyptic number.

2100001202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100001202220 is an abundant number, since it is smaller than the sum of its proper divisors (3834955484628).

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

2100001202220 is a wasteful number, since it uses less digits than its factorization.

2100001202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327103110 (or 327103108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2100001202220 its reverse (222021000012), we get a palindrome (2322022202232).

The spelling of 2100001202220 in words is "two trillion, one hundred billion, one million, two hundred two thousand, two hundred twenty".