1000020200122 has 4 divisors (see below), whose sum is σ = 1500030300186. Its totient is φ = 500010100060.

The previous prime is 1000020200117. The next prime is 1000020200159. The reversal of 1000020200122 is 2210020200001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 846733072761 + 153287127361 = 920181^2 + 391519^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1000020200099 and 1000020200108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250005050029 + ... + 250005050032.

Almost surely, 2^{1000020200122} is an apocalyptic number.

1000020200122 is a deficient number, since it is larger than the sum of its proper divisors (500010100064).

1000020200122 is an equidigital number, since it uses as much as digits as its factorization.

1000020200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500010100063.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1000020200122 its reverse (2210020200001), we get a palindrome (3210040400123).

The spelling of 1000020200122 in words is "one trillion, twenty million, two hundred thousand, one hundred twenty-two".