21112211121022 has 8 divisors (see below), whose sum is σ = 36192361921776. Its totient is φ = 9048090480432.

The previous prime is 21112211120929. The next prime is 21112211121031. The reversal of 21112211121022 is 22012111221112.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754007540023 + ... + 754007540050.

It is an arithmetic number, because the mean of its divisors is an integer number (4524045240222).

Almost surely, 2^{21112211121022} is an apocalyptic number.

21112211121022 is a deficient number, since it is larger than the sum of its proper divisors (15080150800754).

21112211121022 is a wasteful number, since it uses less digits than its factorization.

21112211121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508015080082.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 21112211121022 its reverse (22012111221112), we get a palindrome (43124322342134).

The spelling of 21112211121022 in words is "twenty-one trillion, one hundred twelve billion, two hundred eleven million, one hundred twenty-one thousand, twenty-two".