71222010 has 64 divisors (see below), whose sum is σ = 181958400. Its totient is φ = 17779712.

The previous prime is 71221991. The next prime is 71222023. The reversal of 71222010 is 1022217.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182896 + ... + 183284.

It is an arithmetic number, because the mean of its divisors is an integer number (2843100).

Almost surely, 2^71222010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71222010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90979200).

71222010 is an abundant number, since it is smaller than the sum of its proper divisors (110736390).

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

71222010 is a wasteful number, since it uses less digits than its factorization.

71222010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 71222010 is about 8439.3133606947. The cubic root of 71222010 is about 414.5129234961.

Adding to 71222010 its reverse (1022217), we get a palindrome (72244227).

It can be divided in two parts, 712 and 22010, that added together give a palindrome (22722).

The spelling of 71222010 in words is "seventy-one million, two hundred twenty-two thousand, ten".