1211001212203 has 8 divisors (see below), whose sum is σ = 1215381263616. Its totient is φ = 1206624277800.

The previous prime is 1211001212147. The next prime is 1211001212207. The reversal of 1211001212203 is 3022121001121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211001212203 - 2¹³ = 1211001204011 is a prime.

It is a super-2 number, since 2×1211001212203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211001212207) 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, 588 + ... + 1556278.

It is an arithmetic number, because the mean of its divisors is an integer number (151922657952).

Almost surely, 2^{1211001212203} is an apocalyptic number.

1211001212203 is a deficient number, since it is larger than the sum of its proper divisors (4380051413).

1211001212203 is a wasteful number, since it uses less digits than its factorization.

1211001212203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558505.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1211001212203 its reverse (3022121001121), we get a palindrome (4233122213324).

The spelling of 1211001212203 in words is "one trillion, two hundred eleven billion, one million, two hundred twelve thousand, two hundred three".