222021101100 has 72 divisors (see below), whose sum is σ = 659742735568. Its totient is φ = 57605472000.

The previous prime is 222021101077. The next prime is 222021101117. The reversal of 222021101100 is 1101120222.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9989851 + ... + 10012050.

Almost surely, 2^222021101100 is an apocalyptic number.

222021101100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222021101100 is an abundant number, since it is smaller than the sum of its proper divisors (437721634468).

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

222021101100 is a wasteful number, since it uses less digits than its factorization.

222021101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20001955 (or 20001948 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 222021101100 its reverse (1101120222), we get a palindrome (223122221322).

The spelling of 222021101100 in words is "two hundred twenty-two billion, twenty-one million, one hundred one thousand, one hundred".