2222001012100 has 36 divisors (see below), whose sum is σ = 4900787163748. Its totient is φ = 874229904000.

The previous prime is 2222001012061. The next prime is 2222001012103. The reversal of 2222001012100 is 12101002222.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 196229508484 + 2025771503616 = 442978^2 + 1423296^2 .

It is not an unprimeable number, because it can be changed into a prime (2222001012103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182125131 + ... + 182137330.

Almost surely, 2^{2222001012100} is an apocalyptic number.

2222001012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222001012100 is an abundant number, since it is smaller than the sum of its proper divisors (2678786151648).

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

2222001012100 is a wasteful number, since it uses less digits than its factorization.

2222001012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364262536 (or 364262529 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2222001012100 its reverse (12101002222), we get a palindrome (2234102014322).

The spelling of 2222001012100 in words is "two trillion, two hundred twenty-two billion, one million, twelve thousand, one hundred".