32212254721 has 48 divisors (see below), whose sum is σ = 36250560000. Its totient is φ = 28578539520.

The previous prime is 32212254719. The next prime is 32212254749. The reversal of 32212254721 is 12745221223.

It is a Cullen number, since it is equal to 30×2³⁰+1.

It is not a de Polignac number, because 32212254721 - 2¹ = 32212254719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32212204721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78758365 + ... + 78758773.

It is an arithmetic number, because the mean of its divisors is an integer number (755220000).

It is a Proth number, since it is equal to 15 ⋅ 2³¹ + 1 and 15 < 2³¹.

Almost surely, 2^32212254721 is an apocalyptic number.

32212254721 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

32212254721 is a deficient number, since it is larger than the sum of its proper divisors (4038305279).

32212254721 is a wasteful number, since it uses less digits than its factorization.

32212254721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 665 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

Adding to 32212254721 its reverse (12745221223), we get a palindrome (44957475944).

The spelling of 32212254721 in words is "thirty-two billion, two hundred twelve million, two hundred fifty-four thousand, seven hundred twenty-one".