1212202323220 has 24 divisors (see below), whose sum is σ = 2909285576064. Its totient is φ = 415612225056.

The previous prime is 1212202323217. The next prime is 1212202323223. The reversal of 1212202323220 is 223232022121.

It is an interprime number because it is at equal distance from previous prime (1212202323217) and next prime (1212202323223).

It is a junction number, because it is equal to n+sod(n) for n = 1212202323191 and 1212202323200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212202323223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4329293872 + ... + 4329294151.

It is an arithmetic number, because the mean of its divisors is an integer number (121220232336).

Almost surely, 2^{1212202323220} is an apocalyptic number.

1212202323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212202323220 is an abundant number, since it is smaller than the sum of its proper divisors (1697083252844).

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

1212202323220 is a wasteful number, since it uses less digits than its factorization.

1212202323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8658588039 (or 8658588037 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1212202323220 its reverse (223232022121), we get a palindrome (1435434345341).

The spelling of 1212202323220 in words is "one trillion, two hundred twelve billion, two hundred two million, three hundred twenty-three thousand, two hundred twenty".