222122221121100 has 144 divisors (see below), whose sum is σ = 676522204807680. Its totient is φ = 56113125638400.

The previous prime is 222122221121071. The next prime is 222122221121131. The reversal of 222122221121100 is 1121122221222.

It is a super-2 number, since 2×222122221121100² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 165950134 + ... + 167283266.

It is an arithmetic number, because the mean of its divisors is an integer number (4698070866720).

Almost surely, 2^{222122221121100} is an apocalyptic number.

222122221121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222122221121100 is an abundant number, since it is smaller than the sum of its proper divisors (454399983686580).

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

222122221121100 is a wasteful number, since it uses less digits than its factorization.

222122221121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362400 (or 1362393 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222122221121100 its reverse (1121122221222), we get a palindrome (223243343342322).

The spelling of 222122221121100 in words is "two hundred twenty-two trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred".