61222000005 has 12 divisors (see below), whose sum is σ = 106118133420. Its totient is φ = 32651733312.

The previous prime is 61221999997. The next prime is 61222000019. The reversal of 61222000005 is 50000022216.

It can be written as a sum of positive squares in 2 ways, for example, as 16224135876 + 44997864129 = 127374^2 + 212127^2 .

It is not a de Polignac number, because 61222000005 - 2³ = 61221999997 is a prime.

It is a super-2 number, since 2×61222000005² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 680244400 + ... + 680244489.

It is an arithmetic number, because the mean of its divisors is an integer number (8843177785).

Almost surely, 2^61222000005 is an apocalyptic number.

It is an amenable number.

61222000005 is a deficient number, since it is larger than the sum of its proper divisors (44896133415).

61222000005 is a wasteful number, since it uses less digits than its factorization.

61222000005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360488900 (or 1360488897 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The spelling of 61222000005 in words is "sixty-one billion, two hundred twenty-two million, five", and thus it is an aban number.