6222150981 has 6 divisors (see below), whose sum is σ = 8987551430. Its totient is φ = 4148100648.

The previous prime is 6222150967. The next prime is 6222150983. The reversal of 6222150981 is 1890512226.

6222150981 is a `hidden beast` number, since 622 + 21 + 5 + 0 + 9 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3895632225 + 2326518756 = 62415^2 + 48234^2 .

It is not a de Polignac number, because 6222150981 - 2¹³ = 6222142789 is a prime.

It is a super-2 number, since 2×6222150981² = 77430325660718524722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6222150983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 345675046 + ... + 345675063.

Almost surely, 2^6222150981 is an apocalyptic number.

It is an amenable number.

6222150981 is a deficient number, since it is larger than the sum of its proper divisors (2765400449).

6222150981 is a wasteful number, since it uses less digits than its factorization.

6222150981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691350115 (or 691350112 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 6222150981 is about 78880.6121997034. The cubic root of 6222150981 is about 1839.2757646155.

The spelling of 6222150981 in words is "six billion, two hundred twenty-two million, one hundred fifty thousand, nine hundred eighty-one".