1002222121201 has 4 divisors (see below), whose sum is σ = 1145396709952. Its totient is φ = 859047532452.

The previous prime is 1002222121163. The next prime is 1002222121211. The reversal of 1002222121201 is 1021212222001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1002222121201 - 2³¹ = 1000074637553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002222121211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71587294365 + ... + 71587294378.

It is an arithmetic number, because the mean of its divisors is an integer number (286349177488).

Almost surely, 2^{1002222121201} is an apocalyptic number.

It is an amenable number.

1002222121201 is a deficient number, since it is larger than the sum of its proper divisors (143174588751).

1002222121201 is an equidigital number, since it uses as much as digits as its factorization.

1002222121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143174588750.

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

Adding to 1002222121201 its reverse (1021212222001), we get a palindrome (2023434343202).

The spelling of 1002222121201 in words is "one trillion, two billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred one".