1012021220122 has 16 divisors (see below), whose sum is σ = 1728036234432. Its totient is φ = 440009225920.

The previous prime is 1012021220087. The next prime is 1012021220131. The reversal of 1012021220122 is 2210221202101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1012021220096 and 1012021220105.

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 7 ways as a sum of consecutive naturals, for example, 1000020463 + ... + 1000021474.

It is an arithmetic number, because the mean of its divisors is an integer number (108002264652).

Almost surely, 2^{1012021220122} is an apocalyptic number.

1012021220122 is a deficient number, since it is larger than the sum of its proper divisors (716015014310).

1012021220122 is a wasteful number, since it uses less digits than its factorization.

1012021220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000041973.

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

Adding to 1012021220122 its reverse (2210221202101), we get a palindrome (3222242422223).

The spelling of 1012021220122 in words is "one trillion, twelve billion, twenty-one million, two hundred twenty thousand, one hundred twenty-two".