1200221146 has 16 divisors (see below), whose sum is σ = 1930845600. Its totient is φ = 557797968.

The previous prime is 1200221137. The next prime is 1200221147. The reversal of 1200221146 is 6411220021.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (1200221147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295956 + ... + 299983.

It is an arithmetic number, because the mean of its divisors is an integer number (120677850).

Almost surely, 2^1200221146 is an apocalyptic number.

1200221146 is a deficient number, since it is larger than the sum of its proper divisors (730624454).

1200221146 is a wasteful number, since it uses less digits than its factorization.

1200221146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596013.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1200221146 is about 34644.2079718963. The cubic root of 1200221146 is about 1062.7238436985.

Adding to 1200221146 its reverse (6411220021), we get a palindrome (7611441167).

The spelling of 1200221146 in words is "one billion, two hundred million, two hundred twenty-one thousand, one hundred forty-six".