211421041002 has 128 divisors (see below), whose sum is σ = 496458547200. Its totient is φ = 66560522688.

The previous prime is 211421040997. The next prime is 211421041019. The reversal of 211421041002 is 200140124112.

211421041002 is a `hidden beast` number, since 211 + 42 + 1 + 0 + 410 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41558503 + ... + 41563589.

It is an arithmetic number, because the mean of its divisors is an integer number (3878582400).

Almost surely, 2^211421041002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211421041002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248229273600).

211421041002 is an abundant number, since it is smaller than the sum of its proper divisors (285037506198).

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

211421041002 is a wasteful number, since it uses less digits than its factorization.

211421041002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537 (or 5531 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211421041002 its reverse (200140124112), we get a palindrome (411561165114).

The spelling of 211421041002 in words is "two hundred eleven billion, four hundred twenty-one million, forty-one thousand, two".