1002020122 has 8 divisors (see below), whose sum is σ = 1554858900.
Its totient is φ = 483733824.
The previous prime is 1002020087. The next prime is 1002020177. The reversal of 1002020122 is 2210202001.
Adding to 1002020122 its reverse (2210202001), we get a palindrome (3212222123).
It can be written as a sum of positive squares in 2 ways, for example, as 937523161 + 64496961 = 30619^2 + 8031^2
It is a sphenic number, since it is the product of 3 distinct primes.
It is a junction number, because it is equal to n+sod(n) for n = 1002020099 and 1002020108.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8638047 + ... + 8638162.
Almost surely, 21002020122 is an apocalyptic number.
1002020122 is a deficient number, since it is larger than the sum of its proper divisors (552838778).
1002020122 is a wasteful number, since it uses less digits than its factorization.
1002020122 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17276240.
The product of its (nonzero) digits is 16, while the sum is 10.
The square root of 1002020122 is about 31654.7014201682.
The cubic root of 1002020122 is about 1000.6729210757.
The spelling of 1002020122 in words is "one billion, two million, twenty thousand, one hundred twenty-two".