73650110021221 has 16 divisors (see below), whose sum is σ = 80672437347840. Its totient is φ = 66926722374400.

The previous prime is 73650110021183. The next prime is 73650110021249. The reversal of 73650110021221 is 12212001105637.

It is a cyclic number.

It is not a de Polignac number, because 73650110021221 - 2⁹ = 73650110020709 is a prime.

It is a super-2 number, since 2×73650110021221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73650110021261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45069396 + ... + 46674946.

It is an arithmetic number, because the mean of its divisors is an integer number (5042027334240).

Almost surely, 2^{73650110021221} is an apocalyptic number.

It is an amenable number.

73650110021221 is a deficient number, since it is larger than the sum of its proper divisors (7022327326619).

73650110021221 is a wasteful number, since it uses less digits than its factorization.

73650110021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698644.

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 73650110021221 its reverse (12212001105637), we get a palindrome (85862111126858).

The spelling of 73650110021221 in words is "seventy-three trillion, six hundred fifty billion, one hundred ten million, twenty-one thousand, two hundred twenty-one".