1012021020122 has 32 divisors (see below), whose sum is σ = 1759992105600. Its totient is φ = 427479706368.

The previous prime is 1012021020079. The next prime is 1012021020133. The reversal of 1012021020122 is 2210201202101.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1012021020097 and 1012021020106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 907472 + ... + 1687467.

It is an arithmetic number, because the mean of its divisors is an integer number (54999753300).

Almost surely, 2^{1012021020122} is an apocalyptic number.

1012021020122 is a deficient number, since it is larger than the sum of its proper divisors (747971085478).

1012021020122 is a wasteful number, since it uses less digits than its factorization.

1012021020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595350.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1012021020122 its reverse (2210201202101), we get a palindrome (3222222222223).

The spelling of 1012021020122 in words is "one trillion, twelve billion, twenty-one million, twenty thousand, one hundred twenty-two".