1012222021120 has 80 divisors (see below), whose sum is σ = 2463184163088. Its totient is φ = 398845624320.

The previous prime is 1012222021099. The next prime is 1012222021121. The reversal of 1012222021120 is 211202222101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1012222021094 and 1012222021103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012222021121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2779221 + ... + 3122260.

Almost surely, 2^{1012222021120} is an apocalyptic number.

1012222021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012222021120 is an abundant number, since it is smaller than the sum of its proper divisors (1450962141968).

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

1012222021120 is an frugal number, since it uses more digits than its factorization.

1012222021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5901571 (or 5901555 counting only the distinct ones).

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

Adding to 1012222021120 its reverse (211202222101), we get a palindrome (1223424243221).

The spelling of 1012222021120 in words is "one trillion, twelve billion, two hundred twenty-two million, twenty-one thousand, one hundred twenty".