1222121212110 has 48 divisors (see below), whose sum is σ = 3263393948256. Its totient is φ = 317090908224.

The previous prime is 1222121212087. The next prime is 1222121212133. The reversal of 1222121212110 is 112121212221.

1222121212110 is a `hidden beast` number, since 1 + 222 + 121 + 212 + 110 = 666.

It is an interprime number because it is at equal distance from previous prime (1222121212087) and next prime (1222121212133).

It is a super-2 number, since 2×1222121212110² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183498354 + ... + 183505013.

It is an arithmetic number, because the mean of its divisors is an integer number (67987373922).

Almost surely, 2^{1222121212110} is an apocalyptic number.

1222121212110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222121212110 is an abundant number, since it is smaller than the sum of its proper divisors (2041272736146).

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

1222121212110 is a wasteful number, since it uses less digits than its factorization.

1222121212110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367003417 (or 367003414 counting only the distinct ones).

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

Adding to 1222121212110 its reverse (112121212221), we get a palindrome (1334242424331).

It can be divided in two parts, 12 and 22121212110, that added together give a palindrome (22121212122).

The spelling of 1222121212110 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred ten".