212001221122 has 16 divisors (see below), whose sum is σ = 338116654080. Its totient is φ = 99347848768.

The previous prime is 212001221111. The next prime is 212001221123. The reversal of 212001221122 is 221122100212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212001221096 and 212001221105.

It is not an unprimeable number, because it can be changed into a prime (212001221123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13036498 + ... + 13052749.

It is an arithmetic number, because the mean of its divisors is an integer number (21132290880).

Almost surely, 2^212001221122 is an apocalyptic number.

212001221122 is a deficient number, since it is larger than the sum of its proper divisors (126115432958).

212001221122 is a wasteful number, since it uses less digits than its factorization.

212001221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26089505.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212001221122 its reverse (221122100212), we get a palindrome (433123321334).

The spelling of 212001221122 in words is "two hundred twelve billion, one million, two hundred twenty-one thousand, one hundred twenty-two".