2122201012100 has 108 divisors (see below), whose sum is σ = 5030270862372. Its totient is φ = 772543161600.

The previous prime is 2122201012097. The next prime is 2122201012111. The reversal of 2122201012100 is 12101022212.

It can be written as a sum of positive squares in 6 ways, for example, as 4960666624 + 2117240345476 = 70432^2 + 1455074^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6391382 + ... + 6715218.

It is an arithmetic number, because the mean of its divisors is an integer number (46576582059).

Almost surely, 2^{2122201012100} is an apocalyptic number.

2122201012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2122201012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2515135431186).

2122201012100 is an abundant number, since it is smaller than the sum of its proper divisors (2908069850272).

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

2122201012100 is a wasteful number, since it uses less digits than its factorization.

2122201012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324006 (or 323928 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2122201012100 its reverse (12101022212), we get a palindrome (2134302034312).

The spelling of 2122201012100 in words is "two trillion, one hundred twenty-two billion, two hundred one million, twelve thousand, one hundred".