31212103114121 has 2 divisors, whose sum is σ = 31212103114122. Its totient is φ = 31212103114120.

The previous prime is 31212103114079. The next prime is 31212103114139. The reversal of 31212103114121 is 12141130121213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29603784556096 + 1608318558025 = 5440936^2 + 1268195^2 .

It is a cyclic number.

It is not a de Polignac number, because 31212103114121 - 2⁶ = 31212103114057 is a prime.

It is not a weakly prime, because it can be changed into another prime (31212103104121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606051557060 + 15606051557061.

It is an arithmetic number, because the mean of its divisors is an integer number (15606051557061).

Almost surely, 2^{31212103114121} is an apocalyptic number.

It is an amenable number.

31212103114121 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212103114121 is an equidigital number, since it uses as much as digits as its factorization.

31212103114121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 31212103114121 its reverse (12141130121213), we get a palindrome (43353233235334).

The spelling of 31212103114121 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred fourteen thousand, one hundred twenty-one".