222012011100 has 144 divisors (see below), whose sum is σ = 717842555136. Its totient is φ = 52508352000.

The previous prime is 222012011099. The next prime is 222012011101. The reversal of 222012011100 is 1110210222.

It is an interprime number because it is at equal distance from previous prime (222012011099) and next prime (222012011101).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222012011101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 685144 + ... + 955743.

It is an arithmetic number, because the mean of its divisors is an integer number (4985017744).

Almost surely, 2^222012011100 is an apocalyptic number.

222012011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222012011100 is an abundant number, since it is smaller than the sum of its proper divisors (495830544036).

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

222012011100 is a wasteful number, since it uses less digits than its factorization.

222012011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640956 (or 1640949 counting only the distinct ones).

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

Adding to 222012011100 its reverse (1110210222), we get a palindrome (223122221322).

The spelling of 222012011100 in words is "two hundred twenty-two billion, twelve million, eleven thousand, one hundred".