61321201224 has 32 divisors (see below), whose sum is σ = 153568727520. Its totient is φ = 20404970496.

The previous prime is 61321201171. The next prime is 61321201237. The reversal of 61321201224 is 42210212316.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 61321201194 and 61321201203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2200234 + ... + 2227929.

It is an arithmetic number, because the mean of its divisors is an integer number (4799022735).

Almost surely, 2^61321201224 is an apocalyptic number.

It is an amenable number.

61321201224 is an abundant number, since it is smaller than the sum of its proper divisors (92247526296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61321201224 is a wasteful number, since it uses less digits than its factorization.

61321201224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428749 (or 4428745 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The spelling of 61321201224 in words is "sixty-one billion, three hundred twenty-one million, two hundred one thousand, two hundred twenty-four".