201212302031123 has 2 divisors, whose sum is σ = 201212302031124. Its totient is φ = 201212302031122.

The previous prime is 201212302031057. The next prime is 201212302031149. The reversal of 201212302031123 is 321130203212102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201212302031123 - 2²² = 201212297836819 is a prime.

It is a super-2 number, since 2×201212302031123² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201212302033123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606151015561 + 100606151015562.

It is an arithmetic number, because the mean of its divisors is an integer number (100606151015562).

Almost surely, 2^{201212302031123} is an apocalyptic number.

201212302031123 is a deficient number, since it is larger than the sum of its proper divisors (1).

201212302031123 is an equidigital number, since it uses as much as digits as its factorization.

201212302031123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 201212302031123 its reverse (321130203212102), we get a palindrome (522342505243225).

The spelling of 201212302031123 in words is "two hundred one trillion, two hundred twelve billion, three hundred two million, thirty-one thousand, one hundred twenty-three".