221013123002 has 12 divisors (see below), whose sum is σ = 385645347450. Its totient is φ = 94719909816.

The previous prime is 221013122999. The next prime is 221013123029. The reversal of 221013123002 is 200321310122.

It can be written as a sum of positive squares in only one way, i.e., 165023625361 + 55989497641 = 406231^2 + 236621^2 .

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 5 ways as a sum of consecutive naturals, for example, 1127617877 + ... + 1127618072.

Almost surely, 2^221013123002 is an apocalyptic number.

221013123002 is a deficient number, since it is larger than the sum of its proper divisors (164632224448).

221013123002 is a wasteful number, since it uses less digits than its factorization.

221013123002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255235965 (or 2255235958 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221013123002 its reverse (200321310122), we get a palindrome (421334433124).

The spelling of 221013123002 in words is "two hundred twenty-one billion, thirteen million, one hundred twenty-three thousand, two".