1220111110212 has 24 divisors (see below), whose sum is σ = 2846948209056. Its totient is φ = 406700519808.

The previous prime is 1220111110201. The next prime is 1220111110223. The reversal of 1220111110212 is 2120111110221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1220111110201) and next prime (1220111110223).

It is a super-2 number, since 2×1220111110212² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220111110191 and 1220111110200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1600263 + ... + 2236305.

It is an arithmetic number, because the mean of its divisors is an integer number (118622842044).

Almost surely, 2^{1220111110212} is an apocalyptic number.

1220111110212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220111110212 is an abundant number, since it is smaller than the sum of its proper divisors (1626837098844).

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

1220111110212 is a wasteful number, since it uses less digits than its factorization.

1220111110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795907 (or 795905 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1220111110212 its reverse (2120111110221), we get a palindrome (3340222220433).

Subtracting 1220111110212 from its reverse (2120111110221), we obtain a palindrome (900000000009).

The spelling of 1220111110212 in words is "one trillion, two hundred twenty billion, one hundred eleven million, one hundred ten thousand, two hundred twelve".