21112112122022 has 16 divisors (see below), whose sum is σ = 31858637513472. Its totient is φ = 10492569616200.

The previous prime is 21112112122009. The next prime is 21112112122037. The reversal of 21112112122022 is 22022121121112.

It is a junction number, because it is equal to n+sod(n) for n = 21112112121985 and 21112112122003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12162743 + ... + 13789725.

It is an arithmetic number, because the mean of its divisors is an integer number (1991164844592).

Almost surely, 2^{21112112122022} is an apocalyptic number.

21112112122022 is a deficient number, since it is larger than the sum of its proper divisors (10746525391450).

21112112122022 is a wasteful number, since it uses less digits than its factorization.

21112112122022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666003.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 21112112122022 its reverse (22022121121112), we get a palindrome (43134233243134).

The spelling of 21112112122022 in words is "twenty-one trillion, one hundred twelve billion, one hundred twelve million, one hundred twenty-two thousand, twenty-two".