1200222051 has 16 divisors (see below), whose sum is σ = 1829393664. Its totient is φ = 685659744.

The previous prime is 1200222013. The next prime is 1200222059. The reversal of 1200222051 is 1502220021.

It is not a de Polignac number, because 1200222051 - 2⁷ = 1200221923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200222051.

It is not an unprimeable number, because it can be changed into a prime (1200222059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154701 + ... + 162273.

It is an arithmetic number, because the mean of its divisors is an integer number (114337104).

Almost surely, 2^1200222051 is an apocalyptic number.

1200222051 is a deficient number, since it is larger than the sum of its proper divisors (629171613).

1200222051 is an equidigital number, since it uses as much as digits as its factorization.

1200222051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15130.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1200222051 is about 34644.2210332402. The cubic root of 1200222051 is about 1062.7241108062.

Adding to 1200222051 its reverse (1502220021), we get a palindrome (2702442072).

The spelling of 1200222051 in words is "one billion, two hundred million, two hundred twenty-two thousand, fifty-one".