1200002022 has 36 divisors (see below), whose sum is σ = 2665033020. Its totient is φ = 390234720.

The previous prime is 1200002017. The next prime is 1200002029. The reversal of 1200002022 is 2202000021.

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 = 1200001995 and 1200002013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200002029) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10429 + ... + 50087.

It is an arithmetic number, because the mean of its divisors is an integer number (74028695).

Almost surely, 2^1200002022 is an apocalyptic number.

1200002022 is an abundant number, since it is smaller than the sum of its proper divisors (1465030998).

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

1200002022 is a wasteful number, since it uses less digits than its factorization.

1200002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39749 (or 39705 counting only the distinct ones).

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

The square root of 1200002022 is about 34641.0453364214. The cubic root of 1200002022 is about 1062.6591660422.

Adding to 1200002022 its reverse (2202000021), we get a palindrome (3402002043).

The spelling of 1200002022 in words is "one billion, two hundred million, two thousand, twenty-two".