21022003211 has 8 divisors (see below), whose sum is σ = 22945360944. Its totient is φ = 19100689920.

The previous prime is 21022003181. The next prime is 21022003333. The reversal of 21022003211 is 11230022012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21022003211 - 2¹⁴ = 21021986827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21022003511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489566 + ... + 530771.

It is an arithmetic number, because the mean of its divisors is an integer number (2868170118).

Almost surely, 2^21022003211 is an apocalyptic number.

21022003211 is a deficient number, since it is larger than the sum of its proper divisors (1923357733).

21022003211 is a wasteful number, since it uses less digits than its factorization.

21022003211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022221.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21022003211 its reverse (11230022012), we get a palindrome (32252025223).

The spelling of 21022003211 in words is "twenty-one billion, twenty-two million, three thousand, two hundred eleven".