1012212222120 has 256 divisors, whose sum is σ = 3874497408000. Its totient is φ = 232469740800.

The previous prime is 1012212222103. The next prime is 1012212222143. The reversal of 1012212222120 is 212222122101.

It is a happy number.

1012212222120 is a `hidden beast` number, since 10 + 1 + 221 + 222 + 212 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1012212222093 and 1012212222102.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 2016466 + ... + 2467905.

It is an arithmetic number, because the mean of its divisors is an integer number (15134755500).

Almost surely, 2^{1012212222120} is an apocalyptic number.

1012212222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012212222120 is an abundant number, since it is smaller than the sum of its proper divisors (2862285185880).

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

1012212222120 is a wasteful number, since it uses less digits than its factorization.

1012212222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484421 (or 4484411 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1012212222120 its reverse (212222122101), we get a palindrome (1224434344221).

The spelling of 1012212222120 in words is "one trillion, twelve billion, two hundred twelve million, two hundred twenty-two thousand, one hundred twenty".