1214125513 has 4 divisors (see below), whose sum is σ = 1255991940. Its totient is φ = 1172259088.

The previous prime is 1214125501. The next prime is 1214125519. The reversal of 1214125513 is 3155214121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3155214121 = 3229 ⋅977149.

It can be written as a sum of positive squares in 2 ways, for example, as 713798089 + 500327424 = 26717^2 + 22368^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214125513 - 2⁵ = 1214125481 is a prime.

It is a super-2 number, since 2×1214125513² = 2948201522635026338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1214125519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20933170 + ... + 20933227.

It is an arithmetic number, because the mean of its divisors is an integer number (313997985).

Almost surely, 2^1214125513 is an apocalyptic number.

It is an amenable number.

1214125513 is a deficient number, since it is larger than the sum of its proper divisors (41866427).

1214125513 is an equidigital number, since it uses as much as digits as its factorization.

1214125513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41866426.

The product of its digits is 1200, while the sum is 25.

The square root of 1214125513 is about 34844.3038816964. The cubic root of 1214125513 is about 1066.8119252156.

Adding to 1214125513 its reverse (3155214121), we get a palindrome (4369339634).

The spelling of 1214125513 in words is "one billion, two hundred fourteen million, one hundred twenty-five thousand, five hundred thirteen".