2120221122100 has 36 divisors (see below), whose sum is σ = 4601582292384. Its totient is φ = 847958963680.

The previous prime is 2120221122083. The next prime is 2120221122143. The reversal of 2120221122100 is 12211220212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 958984 + ... + 2271583.

It is an arithmetic number, because the mean of its divisors is an integer number (127821730344).

Almost surely, 2^{2120221122100} is an apocalyptic number.

2120221122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120221122100 is an abundant number, since it is smaller than the sum of its proper divisors (2481361170284).

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

2120221122100 is a wasteful number, since it uses less digits than its factorization.

2120221122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237144 (or 3237137 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2120221122100 its reverse (12211220212), we get a palindrome (2132432342312).

The spelling of 2120221122100 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred".