221212020212122 has 16 divisors (see below), whose sum is σ = 332775922812480. Its totient is φ = 110286715759168.

The previous prime is 221212020212069. The next prime is 221212020212123.

221212020212122 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 221212020212093 and 221212020212102.

It is not an unprimeable number, because it can be changed into a prime (221212020212123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164808258 + ... + 166145074.

It is an arithmetic number, because the mean of its divisors is an integer number (20798495175780).

Almost surely, 2^{221212020212122} is an apocalyptic number.

221212020212122 is a deficient number, since it is larger than the sum of its proper divisors (111563902600358).

221212020212122 is a wasteful number, since it uses less digits than its factorization.

221212020212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575605.

The product of its (nonzero) digits is 512, while the sum is 22.

The spelling of 221212020212122 in words is "two hundred twenty-one trillion, two hundred twelve billion, twenty million, two hundred twelve thousand, one hundred twenty-two".