221021202120122 has 8 divisors (see below), whose sum is σ = 331643693774016. Its totient is φ = 110473304195452.

The previous prime is 221021202120107. The next prime is 221021202120217.

221021202120122 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221021202120094 and 221021202120103.

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 3 ways as a sum of consecutive naturals, for example, 18648424898 + ... + 18648436749.

It is an arithmetic number, because the mean of its divisors is an integer number (41455461721752).

Almost surely, 2^{221021202120122} is an apocalyptic number.

221021202120122 is a deficient number, since it is larger than the sum of its proper divisors (110622491653894).

221021202120122 is a wasteful number, since it uses less digits than its factorization.

221021202120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37296864612.

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

It can be divided in two parts, 22102120 and 2120122, that added together give a palindrome (24222242).

The spelling of 221021202120122 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred two million, one hundred twenty thousand, one hundred twenty-two".