1212011112220 has 12 divisors (see below), whose sum is σ = 2545223335704. Its totient is φ = 484804444880.

The previous prime is 1212011112163. The next prime is 1212011112233. The reversal of 1212011112220 is 222111102121.

It is a super-2 number, since 2×1212011112220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212011112194 and 1212011112203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30300277786 + ... + 30300277825.

It is an arithmetic number, because the mean of its divisors is an integer number (212101944642).

Almost surely, 2^{1212011112220} is an apocalyptic number.

1212011112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212011112220 is an abundant number, since it is smaller than the sum of its proper divisors (1333212223484).

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

1212011112220 is a wasteful number, since it uses less digits than its factorization.

1212011112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60600555620 (or 60600555618 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212011112220 its reverse (222111102121), we get a palindrome (1434122214341).

It can be divided in two parts, 1212011 and 112220, that added together give a palindrome (1324231).

The spelling of 1212011112220 in words is "one trillion, two hundred twelve billion, eleven million, one hundred twelve thousand, two hundred twenty".