211421422002 has 96 divisors (see below), whose sum is σ = 502337873664. Its totient is φ = 59126995200.

The previous prime is 211421421947. The next prime is 211421422007. The reversal of 211421422002 is 200224124112.

211421422002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 211421422002.

It is not an unprimeable number, because it can be changed into a prime (211421422007) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 6700102 + ... + 6731582.

It is an arithmetic number, because the mean of its divisors is an integer number (5232686184).

Almost surely, 2^211421422002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211421422002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251168936832).

211421422002 is an abundant number, since it is smaller than the sum of its proper divisors (290916451662).

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

211421422002 is a wasteful number, since it uses less digits than its factorization.

211421422002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31984 (or 31977 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 211421422002 its reverse (200224124112), we get a palindrome (411645546114).

The spelling of 211421422002 in words is "two hundred eleven billion, four hundred twenty-one million, four hundred twenty-two thousand, two".