2111031003121 has 2 divisors, whose sum is σ = 2111031003122. Its totient is φ = 2111031003120.

The previous prime is 2111031002989. The next prime is 2111031003139. The reversal of 2111031003121 is 1213001301112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1225858624225 + 885172378896 = 1107185^2 + 940836^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111031003121 - 2¹³ = 2111030994929 is a prime.

It is a super-2 number, since 2×2111031003121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2111031003095 and 2111031003104.

It is not a weakly prime, because it can be changed into another prime (2111038003121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055515501560 + 1055515501561.

It is an arithmetic number, because the mean of its divisors is an integer number (1055515501561).

Almost surely, 2^{2111031003121} is an apocalyptic number.

It is an amenable number.

2111031003121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111031003121 is an equidigital number, since it uses as much as digits as its factorization.

2111031003121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 2111031003121 its reverse (1213001301112), we get a palindrome (3324032304233).

The spelling of 2111031003121 in words is "two trillion, one hundred eleven billion, thirty-one million, three thousand, one hundred twenty-one".