211012121221222 has 4 divisors (see below), whose sum is σ = 316518181831836. Its totient is φ = 105506060610610.

The previous prime is 211012121221201. The next prime is 211012121221261. The reversal of 211012121221222 is 222122121210112.

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

It is a super-2 number, since 2×211012121221222² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211012121221193 and 211012121221202.

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, 52753030305304 + ... + 52753030305307.

It is an arithmetic number, because the mean of its divisors is an integer number (79129545457959).

Almost surely, 2^{211012121221222} is an apocalyptic number.

211012121221222 is a deficient number, since it is larger than the sum of its proper divisors (105506060610614).

211012121221222 is a wasteful number, since it uses less digits than its factorization.

211012121221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105506060610613.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 211012121221222 its reverse (222122121210112), we get a palindrome (433134242431334).

The spelling of 211012121221222 in words is "two hundred eleven trillion, twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".