222111010100 has 72 divisors (see below), whose sum is σ = 559865499648. Its totient is φ = 74903932800.

The previous prime is 222111010091. The next prime is 222111010109. The reversal of 222111010100 is 1010111222.

It is an interprime number because it is at equal distance from previous prime (222111010091) and next prime (222111010109).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222111010109) 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, 2558132 + ... + 2643531.

Almost surely, 2^222111010100 is an apocalyptic number.

222111010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222111010100 is an abundant number, since it is smaller than the sum of its proper divisors (337754489548).

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

222111010100 is a wasteful number, since it uses less digits than its factorization.

222111010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5201745 (or 5201738 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 222111010100 its reverse (1010111222), we get a palindrome (223121121322).

The spelling of 222111010100 in words is "two hundred twenty-two billion, one hundred eleven million, ten thousand, one hundred".