221021022111202 has 8 divisors (see below), whose sum is σ = 331531599353436. Its totient is φ = 110510488993392.

The previous prime is 221021022111167. The next prime is 221021022111203. The reversal of 221021022111202 is 202111220120122.

It can be written as a sum of positive squares in 2 ways, for example, as 183857355478801 + 37163666632401 = 13559401^2 + 6096201^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 221021022111202.

It is not an unprimeable number, because it can be changed into a prime (221021022111203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8189488 + ... + 22563460.

Almost surely, 2^{221021022111202} is an apocalyptic number.

221021022111202 is a deficient number, since it is larger than the sum of its proper divisors (110510577242234).

221021022111202 is a wasteful number, since it uses less digits than its factorization.

221021022111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22062212.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221021022111202 its reverse (202111220120122), we get a palindrome (423132242231324).

The spelling of 221021022111202 in words is "two hundred twenty-one trillion, twenty-one billion, twenty-two million, one hundred eleven thousand, two hundred two".