2111123233537 has 2 divisors, whose sum is σ = 2111123233538. Its totient is φ = 2111123233536.

The previous prime is 2111123233403. The next prime is 2111123233547. The reversal of 2111123233537 is 7353323211112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2109143339521 + 1979894016 = 1452289^2 + 44496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111123233537 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111123233547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055561616768 + 1055561616769.

It is an arithmetic number, because the mean of its divisors is an integer number (1055561616769).

Almost surely, 2^{2111123233537} is an apocalyptic number.

It is an amenable number.

2111123233537 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111123233537 is an equidigital number, since it uses as much as digits as its factorization.

2111123233537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

Adding to 2111123233537 its reverse (7353323211112), we get a palindrome (9464446444649).

The spelling of 2111123233537 in words is "two trillion, one hundred eleven billion, one hundred twenty-three million, two hundred thirty-three thousand, five hundred thirty-seven".