1212222010120 has 192 divisors, whose sum is σ = 3039774318000. Its totient is φ = 434700288000.

The previous prime is 1212222010099. The next prime is 1212222010183. The reversal of 1212222010120 is 210102222121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 973880817316 + 238341192804 = 986854^2 + 488202^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212222010094 and 1212222010103.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125627056 + ... + 125636704.

Almost surely, 2^{1212222010120} is an apocalyptic number.

1212222010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212222010120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1519887159000).

1212222010120 is an abundant number, since it is smaller than the sum of its proper divisors (1827552307880).

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

1212222010120 is a wasteful number, since it uses less digits than its factorization.

1212222010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10040 (or 10025 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212222010120 its reverse (210102222121), we get a palindrome (1422324232241).

The spelling of 1212222010120 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, ten thousand, one hundred twenty".