125032241221 has 2 divisors, whose sum is σ = 125032241222. Its totient is φ = 125032241220.

The previous prime is 125032241207. The next prime is 125032241237. The reversal of 125032241221 is 122142230521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77612388100 + 47419853121 = 278590^2 + 217761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125032241221 is a prime.

It is a super-2 number, since 2×125032241221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125032241251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62516120610 + 62516120611.

It is an arithmetic number, because the mean of its divisors is an integer number (62516120611).

Almost surely, 2^125032241221 is an apocalyptic number.

It is an amenable number.

125032241221 is a deficient number, since it is larger than the sum of its proper divisors (1).

125032241221 is an equidigital number, since it uses as much as digits as its factorization.

125032241221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 125032241221 its reverse (122142230521), we get a palindrome (247174471742).

The spelling of 125032241221 in words is "one hundred twenty-five billion, thirty-two million, two hundred forty-one thousand, two hundred twenty-one".