1022002002121 has 32 divisors (see below), whose sum is σ = 1145008886400. Its totient is φ = 907934469120.

The previous prime is 1022002002067. The next prime is 1022002002139. The reversal of 1022002002121 is 1212002002201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1022002002121 - 2²¹ = 1021999904969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1022002002191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11433361 + ... + 11522401.

It is an arithmetic number, because the mean of its divisors is an integer number (35781527700).

Almost surely, 2^{1022002002121} is an apocalyptic number.

It is an amenable number.

1022002002121 is a deficient number, since it is larger than the sum of its proper divisors (123006884279).

1022002002121 is a wasteful number, since it uses less digits than its factorization.

1022002002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89689.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1022002002121 its reverse (1212002002201), we get a palindrome (2234004004322).

The spelling of 1022002002121 in words is "one trillion, twenty-two billion, two million, two thousand, one hundred twenty-one".