1002202202121 has 48 divisors (see below), whose sum is σ = 1430258182080. Its totient is φ = 624080194560.

The previous prime is 1002202202077. The next prime is 1002202202159. The reversal of 1002202202121 is 1212022022001.

It is not a de Polignac number, because 1002202202121 - 2⁷ = 1002202201993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002202202121.

It is not an unprimeable number, because it can be changed into a prime (1002202202171) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79869570 + ... + 79882116.

It is an arithmetic number, because the mean of its divisors is an integer number (29797045460).

Almost surely, 2^{1002202202121} is an apocalyptic number.

It is an amenable number.

1002202202121 is a deficient number, since it is larger than the sum of its proper divisors (428055979959).

1002202202121 is a wasteful number, since it uses less digits than its factorization.

1002202202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13274 (or 13257 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1002202202121 its reverse (1212022022001), we get a palindrome (2214224224122).

The spelling of 1002202202121 in words is "one trillion, two billion, two hundred two million, two hundred two thousand, one hundred twenty-one".