1012232021851 has 2 divisors, whose sum is σ = 1012232021852. Its totient is φ = 1012232021850.

The previous prime is 1012232021837. The next prime is 1012232021903. The reversal of 1012232021851 is 1581202322101.

It is a weak prime.

It is an emirp because it is prime and its reverse (1581202322101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012232021851 - 2²⁵ = 1012198467419 is a prime.

It is a super-2 number, since 2×1012232021851² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1012232021551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506116010925 + 506116010926.

It is an arithmetic number, because the mean of its divisors is an integer number (506116010926).

Almost surely, 2^{1012232021851} is an apocalyptic number.

1012232021851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012232021851 is an equidigital number, since it uses as much as digits as its factorization.

1012232021851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 1012232021851 its reverse (1581202322101), we get a palindrome (2593434343952).

The spelling of 1012232021851 in words is "one trillion, twelve billion, two hundred thirty-two million, twenty-one thousand, eight hundred fifty-one".