222121022110100 has 36 divisors (see below), whose sum is σ = 482021642640384. Its totient is φ = 88844901994080.

The previous prime is 222121022110063. The next prime is 222121022110103. The reversal of 222121022110100 is 1011220121222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121022110103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41288654 + ... + 46357253.

It is an arithmetic number, because the mean of its divisors is an integer number (13389490073344).

Almost surely, 2^{222121022110100} is an apocalyptic number.

222121022110100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222121022110100 is an abundant number, since it is smaller than the sum of its proper divisors (259900620530284).

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

222121022110100 is a wasteful number, since it uses less digits than its factorization.

222121022110100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87671264 (or 87671257 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222121022110100 its reverse (1011220121222), we get a palindrome (223132242231322).

The spelling of 222121022110100 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, twenty-two million, one hundred ten thousand, one hundred".