1213012025111 has 2 divisors, whose sum is σ = 1213012025112. Its totient is φ = 1213012025110.

The previous prime is 1213012025041. The next prime is 1213012025117. The reversal of 1213012025111 is 1115202103121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213012025111 - 2²² = 1213007830807 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213012025117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606506012555 + 606506012556.

It is an arithmetic number, because the mean of its divisors is an integer number (606506012556).

Almost surely, 2^{1213012025111} is an apocalyptic number.

1213012025111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213012025111 is an equidigital number, since it uses as much as digits as its factorization.

1213012025111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 1213012025111 its reverse (1115202103121), we get a palindrome (2328214128232).

It can be divided in two parts, 121301 and 2025111, that added together give a palindrome (2146412).

The spelling of 1213012025111 in words is "one trillion, two hundred thirteen billion, twelve million, twenty-five thousand, one hundred eleven".