1235402021212 has 6 divisors (see below), whose sum is σ = 2161953537128. Its totient is φ = 617701010604.

The previous prime is 1235402021197. The next prime is 1235402021219. The reversal of 1235402021212 is 2121202045321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235402021219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154425252648 + ... + 154425252655.

Almost surely, 2^{1235402021212} is an apocalyptic number.

It is an amenable number.

1235402021212 is a deficient number, since it is larger than the sum of its proper divisors (926551515916).

1235402021212 is a wasteful number, since it uses less digits than its factorization.

1235402021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308850505307 (or 308850505305 counting only the distinct ones).

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

Adding to 1235402021212 its reverse (2121202045321), we get a palindrome (3356604066533).

The spelling of 1235402021212 in words is "one trillion, two hundred thirty-five billion, four hundred two million, twenty-one thousand, two hundred twelve".