1211222200003 has 16 divisors (see below), whose sum is σ = 1231078111200. Its totient is φ = 1191531479040.

The previous prime is 1211222199991. The next prime is 1211222200007. The reversal of 1211222200003 is 3000022221121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1211222200003 - 2¹³ = 1211222191811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211222200003.

It is not an unprimeable number, because it can be changed into a prime (1211222200007) 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, 70374463 + ... + 70391671.

It is an arithmetic number, because the mean of its divisors is an integer number (76942381950).

Almost surely, 2^{1211222200003} is an apocalyptic number.

1211222200003 is a deficient number, since it is larger than the sum of its proper divisors (19855911197).

1211222200003 is a wasteful number, since it uses less digits than its factorization.

1211222200003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21942.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1211222200003 its reverse (3000022221121), we get a palindrome (4211244421124).

The spelling of 1211222200003 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, two hundred thousand, three".