221010123122 has 8 divisors (see below), whose sum is σ = 331802712156. Its totient is φ = 110409219072.

The previous prime is 221010123097. The next prime is 221010123151. The reversal of 221010123122 is 221321010122.

It can be written as a sum of positive squares in 2 ways, for example, as 213600184561 + 7409938561 = 462169^2 + 86081^2 .

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 221010123122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47918363 + ... + 47922974.

Almost surely, 2^221010123122 is an apocalyptic number.

221010123122 is a deficient number, since it is larger than the sum of its proper divisors (110792589034).

221010123122 is a wasteful number, since it uses less digits than its factorization.

221010123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95842492.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221010123122 its reverse (221321010122), we get a palindrome (442331133244).

The spelling of 221010123122 in words is "two hundred twenty-one billion, ten million, one hundred twenty-three thousand, one hundred twenty-two".