1200145522 has 16 divisors (see below), whose sum is σ = 1845299232. Its totient is φ = 585064480.

The previous prime is 1200145519. The next prime is 1200145547. The reversal of 1200145522 is 2255410021.

It is a junction number, because it is equal to n+sod(n) for n = 1200145493 and 1200145502.

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 7 ways as a sum of consecutive naturals, for example, 160593 + ... + 167899.

It is an arithmetic number, because the mean of its divisors is an integer number (115331202).

Almost surely, 2^1200145522 is an apocalyptic number.

1200145522 is a deficient number, since it is larger than the sum of its proper divisors (645153710).

1200145522 is a wasteful number, since it uses less digits than its factorization.

1200145522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9353.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1200145522 is about 34643.1165168493. The cubic root of 1200145522 is about 1062.7015230575.

Adding to 1200145522 its reverse (2255410021), we get a palindrome (3455555543).

The spelling of 1200145522 in words is "one billion, two hundred million, one hundred forty-five thousand, five hundred twenty-two".