1002022121121 has 32 divisors (see below), whose sum is σ = 1647211915008. Its totient is φ = 528734668800.

The previous prime is 1002022121119. The next prime is 1002022121131. The reversal of 1002022121121 is 1211212202001.

It is not a de Polignac number, because 1002022121121 - 2¹ = 1002022121119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002022121121.

It is not an unprimeable number, because it can be changed into a prime (1002022121131) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 26460180 + ... + 26498021.

It is an arithmetic number, because the mean of its divisors is an integer number (51475372344).

Almost surely, 2^{1002022121121} is an apocalyptic number.

It is an amenable number.

1002022121121 is a deficient number, since it is larger than the sum of its proper divisors (645189793887).

1002022121121 is a wasteful number, since it uses less digits than its factorization.

1002022121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52958281.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1002022121121 its reverse (1211212202001), we get a palindrome (2213234323122).

The spelling of 1002022121121 in words is "one trillion, two billion, twenty-two million, one hundred twenty-one thousand, one hundred twenty-one".