1122212112210 has 192 divisors, whose sum is σ = 3350184364800. Its totient is φ = 255306885120.

The previous prime is 1122212112191. The next prime is 1122212112283. The reversal of 1122212112210 is 122112122211.

1122212112210 is a `hidden beast` number, since 1 + 12 + 221 + 211 + 221 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 185701449 + ... + 185707491.

It is an arithmetic number, because the mean of its divisors is an integer number (17448876900).

Almost surely, 2^{1122212112210} is an apocalyptic number.

1122212112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122212112210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1675092182400).

1122212112210 is an abundant number, since it is smaller than the sum of its proper divisors (2227972252590).

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

1122212112210 is a wasteful number, since it uses less digits than its factorization.

1122212112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7393 (or 7390 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1122212112210 its reverse (122112122211), we get a palindrome (1244324234421).

The spelling of 1122212112210 in words is "one trillion, one hundred twenty-two billion, two hundred twelve million, one hundred twelve thousand, two hundred ten".