211221212112122 has 16 divisors (see below), whose sum is σ = 353125246256640. Its totient is φ = 94166732334528.

The previous prime is 211221212112091. The next prime is 211221212112143. The reversal of 211221212112122 is 221211212122112.

It is a super-2 number, since 2×211221212112122² (a number of 29 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 163483909658 + ... + 163483910949.

It is an arithmetic number, because the mean of its divisors is an integer number (22070327891040).

Almost surely, 2^{211221212112122} is an apocalyptic number.

211221212112122 is a deficient number, since it is larger than the sum of its proper divisors (141904034144518).

211221212112122 is a wasteful number, since it uses less digits than its factorization.

211221212112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326967820645.

The product of its digits is 256, while the sum is 23.

Adding to 211221212112122 its reverse (221211212122112), we get a palindrome (432432424234234).

The spelling of 211221212112122 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-two".