211421553602 has 16 divisors (see below), whose sum is σ = 362516141952. Its totient is φ = 90589439040.

The previous prime is 211421553599. The next prime is 211421553611. The reversal of 211421553602 is 206355124112.

211421553602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 1583399 + ... + 1711722.

It is an arithmetic number, because the mean of its divisors is an integer number (22657258872).

Almost surely, 2^211421553602 is an apocalyptic number.

211421553602 is a deficient number, since it is larger than the sum of its proper divisors (151094588350).

211421553602 is a wasteful number, since it uses less digits than its factorization.

211421553602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3299713.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 211421553602 its reverse (206355124112), we get a palindrome (417776677714).

The spelling of 211421553602 in words is "two hundred eleven billion, four hundred twenty-one million, five hundred fifty-three thousand, six hundred two".