211488477413421 has 16 divisors (see below), whose sum is σ = 303693360657344. Its totient is φ = 130139213238144.

The previous prime is 211488477413393. The next prime is 211488477413453. The reversal of 211488477413421 is 124314774884112.

It is not a de Polignac number, because 211488477413421 - 2¹¹ = 211488477411373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211488477413491) 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, 156445291 + ... + 157791336.

It is an arithmetic number, because the mean of its divisors is an integer number (18980835041084).

Almost surely, 2^{211488477413421} is an apocalyptic number.

It is an amenable number.

211488477413421 is a deficient number, since it is larger than the sum of its proper divisors (92204883243923).

211488477413421 is a wasteful number, since it uses less digits than its factorization.

211488477413421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314253900.

The product of its digits is 9633792, while the sum is 57.

The spelling of 211488477413421 in words is "two hundred eleven trillion, four hundred eighty-eight billion, four hundred seventy-seven million, four hundred thirteen thousand, four hundred twenty-one".