1240102212156 has 36 divisors (see below), whose sum is σ = 3134750640112. Its totient is φ = 413361097344.

The previous prime is 1240102212143. The next prime is 1240102212227. The reversal of 1240102212156 is 6512122010421.

It is a happy number.

1240102212156 is a `hidden beast` number, since 12 + 401 + 0 + 221 + 21 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 2538705 + ... + 2987511.

Almost surely, 2^{1240102212156} is an apocalyptic number.

It is an amenable number.

1240102212156 is an abundant number, since it is smaller than the sum of its proper divisors (1894648427956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1240102212156 is a wasteful number, since it uses less digits than its factorization.

1240102212156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525570 (or 525565 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 1240102212156 its reverse (6512122010421), we get a palindrome (7752224222577).

The spelling of 1240102212156 in words is "one trillion, two hundred forty billion, one hundred two million, two hundred twelve thousand, one hundred fifty-six".