211421145006 has 32 divisors (see below), whose sum is σ = 469888866720. Its totient is φ = 70464100032.

The previous prime is 211421144947. The next prime is 211421145017. The reversal of 211421145006 is 600541124112.

211421145006 is a `hidden beast` number, since 2 + 1 + 1 + 42 + 114 + 500 + 6 = 666.

It is a super-3 number, since 3×211421145006³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138016 + ... + 664748.

It is an arithmetic number, because the mean of its divisors is an integer number (14684027085).

Almost surely, 2^211421145006 is an apocalyptic number.

211421145006 is an abundant number, since it is smaller than the sum of its proper divisors (258467721714).

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

211421145006 is a wasteful number, since it uses less digits than its factorization.

211421145006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534177 (or 534171 counting only the distinct ones).

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

Adding to 211421145006 its reverse (600541124112), we get a palindrome (811962269118).

The spelling of 211421145006 in words is "two hundred eleven billion, four hundred twenty-one million, one hundred forty-five thousand, six".