21034254212222 has 32 divisors (see below), whose sum is σ = 32966275436640. Its totient is φ = 10056771486720.

The previous prime is 21034254212221. The next prime is 21034254212233. The reversal of 21034254212222 is 22221245243012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034254212221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4820213 + ... + 8081024.

It is an arithmetic number, because the mean of its divisors is an integer number (1030196107395).

Almost surely, 2^{21034254212222} is an apocalyptic number.

21034254212222 is a deficient number, since it is larger than the sum of its proper divisors (11932021224418).

21034254212222 is a wasteful number, since it uses less digits than its factorization.

21034254212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12901676.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 21034254212222 its reverse (22221245243012), we get a palindrome (43255499455234).

The spelling of 21034254212222 in words is "twenty-one trillion, thirty-four billion, two hundred fifty-four million, two hundred twelve thousand, two hundred twenty-two".