221212000212122 has 32 divisors (see below), whose sum is σ = 334212913099008. Its totient is φ = 109811316638016.

The previous prime is 221212000212113. The next prime is 221212000212163.

221212000212122 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 221212000212094 and 221212000212103.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 175509293 + ... + 176765199.

It is an arithmetic number, because the mean of its divisors is an integer number (10444153534344).

Almost surely, 2^{221212000212122} is an apocalyptic number.

221212000212122 is a deficient number, since it is larger than the sum of its proper divisors (113000912886886).

221212000212122 is a wasteful number, since it uses less digits than its factorization.

221212000212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257350.

The product of its (nonzero) digits is 256, while the sum is 20.

It can be divided in two parts, 221212000 and 212122, that added together give a palindrome (221424122).

The spelling of 221212000212122 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred twelve thousand, one hundred twenty-two".