1235402021213 has 16 divisors (see below), whose sum is σ = 1279194547200. Its totient is φ = 1191689634240.

The previous prime is 1235402021197. The next prime is 1235402021219. The reversal of 1235402021213 is 3121202045321.

It is a cyclic number.

It is not a de Polignac number, because 1235402021213 - 2⁴ = 1235402021197 is a prime.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203221508 + ... + 203227586.

It is an arithmetic number, because the mean of its divisors is an integer number (79949659200).

Almost surely, 2^{1235402021213} is an apocalyptic number.

It is an amenable number.

1235402021213 is a deficient number, since it is larger than the sum of its proper divisors (43792525987).

1235402021213 is a wasteful number, since it uses less digits than its factorization.

1235402021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11492.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1235402021213 its reverse (3121202045321), we get a palindrome (4356604066534).

The spelling of 1235402021213 in words is "one trillion, two hundred thirty-five billion, four hundred two million, twenty-one thousand, two hundred thirteen".