611301221602 has 4 divisors (see below), whose sum is σ = 916951832406. Its totient is φ = 305650610800.

The previous prime is 611301221599. The next prime is 611301221669. The reversal of 611301221602 is 206122103116.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 443741167321 + 167560054281 = 666139^2 + 409341^2 .

It is a super-2 number, since 2×611301221602² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152825305399 + ... + 152825305402.

Almost surely, 2^611301221602 is an apocalyptic number.

611301221602 is a deficient number, since it is larger than the sum of its proper divisors (305650610804).

611301221602 is a wasteful number, since it uses less digits than its factorization.

611301221602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305650610803.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 611301221602 its reverse (206122103116), we get a palindrome (817423324718).

The spelling of 611301221602 in words is "six hundred eleven billion, three hundred one million, two hundred twenty-one thousand, six hundred two".