1012221022220 has 24 divisors (see below), whose sum is σ = 2198962911600. Its totient is φ = 390926739392.

The previous prime is 1012221022199. The next prime is 1012221022223. The reversal of 1012221022220 is 222201222101.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1012221022223) 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, 872603750 + ... + 872604909.

It is an arithmetic number, because the mean of its divisors is an integer number (91623454650).

Almost surely, 2^{1012221022220} is an apocalyptic number.

1012221022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012221022220 is an abundant number, since it is smaller than the sum of its proper divisors (1186741889380).

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

1012221022220 is a wasteful number, since it uses less digits than its factorization.

1012221022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745208697 (or 1745208695 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1012221022220 its reverse (222201222101), we get a palindrome (1234422244321).

The spelling of 1012221022220 in words is "one trillion, twelve billion, two hundred twenty-one million, twenty-two thousand, two hundred twenty".