202001022 has 48 divisors (see below), whose sum is σ = 453293568. Its totient is φ = 64944720.

The previous prime is 202001003. The next prime is 202001039. The reversal of 202001022 is 220100202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 202000995 and 202001013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313833 + ... + 314475.

It is an arithmetic number, because the mean of its divisors is an integer number (9443616).

Almost surely, 2^202001022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202001022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226646784).

202001022 is an abundant number, since it is smaller than the sum of its proper divisors (251292546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202001022 is a wasteful number, since it uses less digits than its factorization.

202001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1242 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 202001022 is about 14212.7063573410. The cubic root of 202001022 is about 586.7474203721.

Adding to 202001022 its reverse (220100202), we get a palindrome (422101224).

The spelling of 202001022 in words is "two hundred two million, one thousand, twenty-two".