21010140222 has 16 divisors (see below), whose sum is σ = 42022755072. Its totient is φ = 7002967640.

The previous prime is 21010140191. The next prime is 21010140233. The reversal of 21010140222 is 22204101012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18253 + ... + 205799.

It is an arithmetic number, because the mean of its divisors is an integer number (2626422192).

Almost surely, 2^21010140222 is an apocalyptic number.

21010140222 is an abundant number, since it is smaller than the sum of its proper divisors (21012614850).

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

21010140222 is a wasteful number, since it uses less digits than its factorization.

21010140222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206223.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21010140222 its reverse (22204101012), we get a palindrome (43214241234).

The spelling of 21010140222 in words is "twenty-one billion, ten million, one hundred forty thousand, two hundred twenty-two".