1211012131303 has 32 divisors (see below), whose sum is σ = 1399518489600. Its totient is φ = 1039138087680.

The previous prime is 1211012131283. The next prime is 1211012131369. The reversal of 1211012131303 is 3031312101121.

It is a cyclic number.

It is not a de Polignac number, because 1211012131303 - 2⁵ = 1211012131271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211012131603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2321883 + ... + 2795203.

It is an arithmetic number, because the mean of its divisors is an integer number (43734952800).

Almost surely, 2^{1211012131303} is an apocalyptic number.

1211012131303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1211012131303 is a deficient number, since it is larger than the sum of its proper divisors (188506358297).

1211012131303 is a wasteful number, since it uses less digits than its factorization.

1211012131303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473599.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1211012131303 its reverse (3031312101121), we get a palindrome (4242324232424).

The spelling of 1211012131303 in words is "one trillion, two hundred eleven billion, twelve million, one hundred thirty-one thousand, three hundred three".