211021111022222 has 4 divisors (see below), whose sum is σ = 316531666533336. Its totient is φ = 105510555511110.

The previous prime is 211021111022167. The next prime is 211021111022261. The reversal of 211021111022222 is 222220111120112.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 211021111022194 and 211021111022203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52755277755554 + ... + 52755277755557.

It is an arithmetic number, because the mean of its divisors is an integer number (79132916633334).

Almost surely, 2^{211021111022222} is an apocalyptic number.

211021111022222 is a deficient number, since it is larger than the sum of its proper divisors (105510555511114).

211021111022222 is a wasteful number, since it uses less digits than its factorization.

211021111022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105510555511113.

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

Adding to 211021111022222 its reverse (222220111120112), we get a palindrome (433241222142334).

The spelling of 211021111022222 in words is "two hundred eleven trillion, twenty-one billion, one hundred eleven million, twenty-two thousand, two hundred twenty-two".