1212302112220 has 24 divisors (see below), whose sum is σ = 2545864625808. Its totient is φ = 484915094400.

The previous prime is 1212302112209. The next prime is 1212302112223. The reversal of 1212302112220 is 222112032121.

It is a super-2 number, since 2×1212302112220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212302112223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1640800 + ... + 2262040.

It is an arithmetic number, because the mean of its divisors is an integer number (106077692742).

Almost surely, 2^{1212302112220} is an apocalyptic number.

1212302112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212302112220 is an abundant number, since it is smaller than the sum of its proper divisors (1333562513588).

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

1212302112220 is a wasteful number, since it uses less digits than its factorization.

1212302112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718821 (or 718819 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1212302112220 its reverse (222112032121), we get a palindrome (1434414144341).

The spelling of 1212302112220 in words is "one trillion, two hundred twelve billion, three hundred two million, one hundred twelve thousand, two hundred twenty".