722012101 has 4 divisors (see below), whose sum is σ = 746909100. Its totient is φ = 697115104.

The previous prime is 722012023. The next prime is 722012107. The reversal of 722012101 is 101210227.

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

It can be written as a sum of positive squares in 2 ways, for example, as 474107076 + 247905025 = 21774^2 + 15745^2 .

It is a cyclic number.

It is not a de Polignac number, because 722012101 - 2⁷ = 722011973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722012107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12448456 + ... + 12448513.

It is an arithmetic number, because the mean of its divisors is an integer number (186727275).

Almost surely, 2^722012101 is an apocalyptic number.

It is an amenable number.

722012101 is a deficient number, since it is larger than the sum of its proper divisors (24896999).

722012101 is a wasteful number, since it uses less digits than its factorization.

722012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24896998.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 722012101 is about 26870.2828604390. The cubic root of 722012101 is about 897.1150837894.

Adding to 722012101 its reverse (101210227), we get a palindrome (823222328).

It can be divided in two parts, 7220 and 12101, that added together give a square (19321 = 139²).

The spelling of 722012101 in words is "seven hundred twenty-two million, twelve thousand, one hundred one".