2211212202100 has 72 divisors (see below), whose sum is σ = 5256444816000. Its totient is φ = 800712729600.

The previous prime is 2211212202037. The next prime is 2211212202109. The reversal of 2211212202100 is 12022121122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211212202109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3942525 + ... + 4468324.

It is an arithmetic number, because the mean of its divisors is an integer number (73006178000).

Almost surely, 2^{2211212202100} is an apocalyptic number.

2211212202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211212202100 is an abundant number, since it is smaller than the sum of its proper divisors (3045232613900).

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

2211212202100 is a wasteful number, since it uses less digits than its factorization.

2211212202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8411113 (or 8411106 counting only the distinct ones).

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

Adding to 2211212202100 its reverse (12022121122), we get a palindrome (2223234323222).

The spelling of 2211212202100 in words is "two trillion, two hundred eleven billion, two hundred twelve million, two hundred two thousand, one hundred".