1021201042122 has 24 divisors (see below), whose sum is σ = 2217857861700. Its totient is φ = 339591792960.

The previous prime is 1021201042117. The next prime is 1021201042171. The reversal of 1021201042122 is 2212401021201.

1021201042122 is a `hidden beast` number, since 1 + 0 + 21 + 201 + 0 + 421 + 22 = 666.

1021201042122 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 903984509961 + 117216532161 = 950781^2 + 342369^2 .

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 = 1021201042095 and 1021201042104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67371747 + ... + 67386902.

Almost surely, 2^{1021201042122} is an apocalyptic number.

1021201042122 is an abundant number, since it is smaller than the sum of its proper divisors (1196656819578).

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

1021201042122 is a wasteful number, since it uses less digits than its factorization.

1021201042122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134759078 (or 134759075 counting only the distinct ones).

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

Adding to 1021201042122 its reverse (2212401021201), we get a palindrome (3233602063323).

The spelling of 1021201042122 in words is "one trillion, twenty-one billion, two hundred one million, forty-two thousand, one hundred twenty-two".