22090000061 has 2 divisors, whose sum is σ = 22090000062. Its totient is φ = 22090000060.

The previous prime is 22090000043. The next prime is 22090000067. The reversal of 22090000061 is 16000009022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20871291961 + 1218708100 = 144469^2 + 34910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22090000061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22089999988 and 22090000042.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22090000067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11045000030 + 11045000031.

It is an arithmetic number, because the mean of its divisors is an integer number (11045000031).

Almost surely, 2^22090000061 is an apocalyptic number.

It is an amenable number.

22090000061 is a deficient number, since it is larger than the sum of its proper divisors (1).

22090000061 is an equidigital number, since it uses as much as digits as its factorization.

22090000061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 22090000061 its reverse (16000009022), we get a palindrome (38090009083).

The spelling of 22090000061 in words is "twenty-two billion, ninety million, sixty-one", and thus it is an aban number and an uban number.