1211201222103 has 24 divisors (see below), whose sum is σ = 1753703377920. Its totient is φ = 805534586640.

The previous prime is 1211201222039. The next prime is 1211201222137. The reversal of 1211201222103 is 3012221021121.

It is not a de Polignac number, because 1211201222103 - 2⁶ = 1211201222039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211201212103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12674700 + ... + 12769902.

It is an arithmetic number, because the mean of its divisors is an integer number (73070974080).

Almost surely, 2^{1211201222103} is an apocalyptic number.

1211201222103 is a deficient number, since it is larger than the sum of its proper divisors (542502155817).

1211201222103 is a wasteful number, since it uses less digits than its factorization.

1211201222103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98579 (or 98576 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1211201222103 its reverse (3012221021121), we get a palindrome (4223422243224).

The spelling of 1211201222103 in words is "one trillion, two hundred eleven billion, two hundred one million, two hundred twenty-two thousand, one hundred three".