221211100000022 has 32 divisors (see below), whose sum is σ = 375283327439520. Its totient is φ = 96870805274880.

The previous prime is 221211099999997. The next prime is 221211100000031. The reversal of 221211100000022 is 220000001112122.

It is a junction number, because it is equal to n+sod(n) for n = 221211099999952 and 221211100000006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379058393 + ... + 379641524.

It is an arithmetic number, because the mean of its divisors is an integer number (11727603982485).

Almost surely, 2^{221211100000022} is an apocalyptic number.

221211100000022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221211100000022 is a deficient number, since it is larger than the sum of its proper divisors (154072227439498).

221211100000022 is a wasteful number, since it uses less digits than its factorization.

221211100000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758700416.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221211100000022 its reverse (220000001112122), we get a palindrome (441211101112144).

The spelling of 221211100000022 in words is "two hundred twenty-one trillion, two hundred eleven billion, one hundred million, twenty-two", and thus it is an aban number.