221021120122 has 32 divisors (see below), whose sum is σ = 365402923200. Its totient is φ = 99428304000.

The previous prime is 221021120093. The next prime is 221021120147.

It is a happy number.

221021120122 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 221021120096 and 221021120105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5711254 + ... + 5749822.

It is an arithmetic number, because the mean of its divisors is an integer number (11418841350).

Almost surely, 2^221021120122 is an apocalyptic number.

221021120122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221021120122 is a deficient number, since it is larger than the sum of its proper divisors (144381803078).

221021120122 is a wasteful number, since it uses less digits than its factorization.

221021120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41262.

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

It can be divided in two parts, 221021 and 120122, that added together give a palindrome (341143).

The spelling of 221021120122 in words is "two hundred twenty-one billion, twenty-one million, one hundred twenty thousand, one hundred twenty-two".