1235213101 has 2 divisors, whose sum is σ = 1235213102. Its totient is φ = 1235213100.

The previous prime is 1235213059. The next prime is 1235213113. The reversal of 1235213101 is 1013125321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1232080201 + 3132900 = 35101^2 + 1770^2 .

It is a cyclic number.

It is not a de Polignac number, because 1235213101 - 2¹⁷ = 1235082029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1235213131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617606550 + 617606551.

It is an arithmetic number, because the mean of its divisors is an integer number (617606551).

Almost surely, 2^1235213101 is an apocalyptic number.

It is an amenable number.

1235213101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1235213101 is an equidigital number, since it uses as much as digits as its factorization.

1235213101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1235213101 is about 35145.5986006783. The cubic root of 1235213101 is about 1072.9528304067.

Adding to 1235213101 its reverse (1013125321), we get a palindrome (2248338422).

The spelling of 1235213101 in words is "one billion, two hundred thirty-five million, two hundred thirteen thousand, one hundred one".