1212222211203 has 16 divisors (see below), whose sum is σ = 1626301670400. Its totient is φ = 803145992544.

The previous prime is 1212222211169. The next prime is 1212222211237. The reversal of 1212222211203 is 3021122222121.

It is an interprime number because it is at equal distance from previous prime (1212222211169) and next prime (1212222211237).

It is not a de Polignac number, because 1212222211203 - 2³³ = 1203632276611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212222211203.

It is not an unprimeable number, because it can be changed into a prime (1212222216203) 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, 10504525 + ... + 10619297.

It is an arithmetic number, because the mean of its divisors is an integer number (101643854400).

Almost surely, 2^{1212222211203} is an apocalyptic number.

1212222211203 is a deficient number, since it is larger than the sum of its proper divisors (414079459197).

1212222211203 is a wasteful number, since it uses less digits than its factorization.

1212222211203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136538.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1212222211203 its reverse (3021122222121), we get a palindrome (4233344433324).

The spelling of 1212222211203 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, two hundred eleven thousand, two hundred three".